anvilmark asks: "Sci-Fi and sci-fi games often incorporate the romantic idea of 'free trader' ships with ports of call on a myriad planets across the galaxy. Recently I was toying with the physics of propelling such ships and their cargos out of a gravity well and realized the astronomical amounts of power it would take to do it (not to mention interstellar travel). This led naturally to contemplating how cheap energy would have to be in order to make this activity profitable. To make a long story short (too late!), I began wondering what would happen if the introduction of fusion power takes energy costs from pennies per kilowatt hour to pennies per megawatt hour (or GWH)? How do you envision the world changing if energy costs became a trivial part of economic equations?"

HBergeron asks: "Rather then post this as another YRO in the litany of new government datamarts there is a more fundamental question for all the coding Slashdot readers out there. This story, in Government Executive magazine, outlines the range of programming glitches in what is a relatively simple database. As a matter of public policy (and taxpayer money) is this level of non-functionality to be expected in these sorts of projects? Is the contractor just ripping off the taxpayers with bad code? How hard is it to write software like this that works?" The article focuses on the SEVIS database, but have others noticed similar trend in other government information systems?

Jay Maynard asks: "The project team is getting ready to release a new version of the Hercules IBM mainframe emulator. Part of the update is support for new instructions IBM added in their latest z/990 system, and two of those do encryption. The Bureau of Industry and Security (formerly the Bureau of Export Administration) changed their regulations on June 6, 2002 to grant a license to export open-source encryption code to anyone but the usual suspects (denied persons and banned countries). They went on to recently clarify that putting up code for download did not in itself constitute exporting to those banned countries or persons. There are many open-source projects that still host encryption code outside the US because of past rules. Is there still a reason for doing so?"

An anonymous reader writes "With the 90th Tour de France starting today, it is fun to marvel at the improvement of road bike technology over the years. Like others, I have traded up from heavy steel to aluminum, and now carbon fiber, ending up with a bike far better than its rider. How have advances in sports technology enhanced your own performance and enjoyment of sport?"

t0pper311 asks: "I work for a pretty large utility company in the midwest and of course, security is a big concern. We use Trend Micro as a mail gateway to basically scan for virii and strip off most attachments like executables or VB script. Now with the Sobig.E virus on the loose, we need to ask ourselves if we should be blocking ZIP files. We got lucky this time and were not effected, but what about next time? What are other companies doing? If you do block ZIP files, how do you give the people who need to sends files the ability to do so? Do you allow any attachments at all?"

A not-so Anonymous Coward asks: "I have searched the web for links on how to make VNC work with Windows XP fast user switching, and all I have seen is people saying that they cannot get it to work. I would now like to ask the Slashdot community to give it their shot, and see if they cannot find a way to make your standard VNC utilities cooperate with Windows XP fast user switching. For those who don't know what the problem is; when using fast user switching, if you switch users (without logging out) from the first user to log on then VNC comes up with a blank screen. Hopefully someone can come up with a fix for this." It sounds like (and I might be way off base here)Windows isn't necessarily running multiple desktops for its fast user switching, and once the switch occurs from the user running the VNC process, that VNC then somehow loses rights to the desktop. It would be interesting to note if VNC sessions will work once the desktop is switched back. Has anyone else tried getting this to work? Have you run into the same problems, or were you able to find a solution?

andy brunetto asks: " We are investigating email clients to deploy as our "standard" at the college where I work. I'm trying to find out who is using Mozilla for their email. When I say "who" I mean organizationally, as I realize 99% of us geeks already use it. What organizations out there are rolling out Mozilla as their standard web and/or email client, and why? Yes, we are considering using Thunderbird, once it is final. Thanks!" Hopefully this will make companies realize that the Internet isn't comprised of just IE users.

Cujo asks: "In all seriousness, I need a RAID that supports at least level 3 and stores > 500 GB, and I need to it work in zero-G (but not in a vacuum), and be able to take a fair bit of vibration and noise when turned off. I don't want to spend huge sums: I'm thinking well less than $50,000. I've looked at Apple's XServe/XRaid products, and they look great (about $10,000), but are they rugged enough and who is their competition? Some people make hardened RAIDs for military use, but I'm unfamiliar with the best candidates in that field (and do I really need mil spec?)."

JoeShmoe950 asks: "I recently got my hands on an Atari 65XE. It didn't come with a floppy or a cassette drive. I started programming when I realized there was no way to save my program. I wanted to ask you people if there is any way to wire up a normal cassette recorder to an Atari. What I need is the description for what part of a tape recorder(record, mic, speaker, etc) to each pin. I want to create an alternative to buying an Atari Cassette Drive from eBay."

Scummer asks: "I am tinkering with the idea of replacing my old Palm Vx with a Tungsten C from Palm since I really like the WiFi capabilities of this new handheld. However, I have read in some reviews, that the range of the T|C is not that great since it doesn't include an external antenna. Has anyone tinkered with his T|C, and can tell if it is possible to place a connector for an external antenna somewhere in there? Is the internal antenna soldered or is it actually plugged, which would provide a better signal quality? I mean, browsing Slashdot and reading email on a T|C from the playground (which is about 1 mile away from my house [with a 15dbi external omni on the roof]), while my kids are having fun falling off the playground equipment, would be awesome." Solutions should try to be a little more novel than Pringles' cans and floppy disks but I don't think the submittor will complain if it works.

HCIGuy asks: "A few of us are working within a local school of engineering and technology to set up a seminar series unique to the area. We envision a sequence of monthly seminars that focus on bleeding edge technology, presented by vendors' engineers, and attended by students, faculty, and industry folk. No marketing hype allowed; we want only the facts. We obviously want this to be of high interest to everyone, so we're asking for input on what topics would be of sky-high fascination right now. What would it be? We're leaning toward wireless for our first program, but all comments gratefully received. What topic would make you rush out and drive across town to hear it? We have only an hour and a half to commit to this, so the material has to be narrowly focused. We plan on holding up to six per school year, and we don't intend to hold over subjects from one time to the next."

WirelessMan asks "I work for a certain university in the US, and our IT department has just deployed IEEE 802.1x authentication for our wireless network. One of the benefits is that all users' sessions are encrypted using tumbling WEP keys. One of the (major) drawbacks is the 'newness' of 1x. As far as I can tell (Google, etc) there aren't a whole lot of places out there who have taken the plunge. Google it, or check out this brief description. Does the Slashdot community have any experience with 1x?"

I'm-Not-A-BOFH asks: "How do you do your large scale network design? I am currently designing a large enterprise network - and there is a ton of information to track and think about. I use AutoCAD, Visio and Cisco Configmaker (which sucks) and many other applications. I am looking for software specifically designed to help you design a network. What tools do you use - and what tools are out there that maybe are little known? How do you begin to manage network documentation when your hosts get into the thousands and your routers and routes into the hundreds? I am really just interested in the tools used to accomplish this - as all the tools I have been finding are just not adequate or well thought out. Please let me know what you think is invaluable to you when you design your systems."

pu33y asks: "Since the publication of Paul Graham's A Plan For Spam, several programs that perform Bayesian filtering having become available, including CRM114 and Bogofilter. But missing is any serious testing to see how they perform in relation to themselves and to other, non-Bayesian filters.Searching Google has turned up nothing and when I asked Paul Graham, he was unaware of any such testing, as well. Can anyone point to any such testing or provide the results of their own personal experiences with Bayesian filters?"

jgercken asks: "I recently survived a 16-hour drive solo thanks to having downloaded 10+ hours of old Off the Hook shows, a 2600 sponsored radio program. It is so refreshing to hear news from a technically cognizant perspective. Is anyone aware of any similar programs or maybe sources of recorded lectures?"

Lonnold asks: "Every time the topic of Linux on the XBox and/or XBox modding comes up, some one always responds, 'I can build a better PC from scratch, why waste time modding a game console?' So that's my challenge, can anyone demonstrate that it is cheaper to build a PC comparable to the XBox specs?"

Demerara asks: "I live in the Caribbean where I am putting together a business plan for a WISP on St. Lucia. Imagine my surprise when I discovered that the St. Lucian National Telecomms Regulatory Commission here licenses and charges fees for 2.4Ghz spread spectrum applications. It's nearly US$400 to apply and, get this, nearly US$800 per link, per *year*. This blows the economics of a WISP out of the water. I may be reading the laws and regulations wrong but I don't think so. For example - they even charge an application fee and an annual license for the 'Family Band' walkie-talkies - look in the fees PDF. I am attempting to find out the following: what international agreements govern spectrum management; what international agreements govern licensing of WiFi or 802.11; and finally, are there any Slashdot readers out there who live in countries where 802.11 technology is also licensed or heavily regulated? The ITU website doesn't seem to answer these questions or, to be fair, I cannot come up with the keywords to find the answers. I'd love to hear from others who use or operate 802.11 under less than 'free' regulatory regimes."

CmdrChillupa asks: "Summer's here in the US. I don't really mind the heat and I've lived my whole life without AC. Just gotten used to having fresh air instead of pre-processed. There's only one problem with this whole theory. After a long day at work I get home and go to do a little surfing on my PowerBook and my WLAN is down. I have a Siemens Speedstream 2624 Wireless Router that from all appearances dislikes the heat more than I do. I've gotten into a habit of holding it in front of a fan for a few minutes everyday when I get home, I thought the fridge might be a bit too humid for it's electronics. Anybody have any solutions aside from a alum-alloy-peltier-inter-cooled-turbo-charged-9 monstrosity?"

ae0nflx asks: "I just graduated from High School and the computer that my parents gave me four years ago has finally died. I've decided to spend all that money that I've been hoarding for a few summers on a new G5. The problem lies in the fact that for college I'll be moving to the East Coast (Upstate New York), from the foggy shores of the San Francisco Bay. Does anyone have any insight on how to ship my brand new machine cross country? Cheap would be good. I'll be flying back in late August and I don't think that I'll be able to take her back with me because I'm assuming she'll be a little big for the overhead bin... I'm not sure if I can trust this to the Postal Service alone." It may not be the same as shipping the big iron, but when you trust your hardware to any shipping company, be it Federal Express, or UPS, you do have the expectations that what you ship, will get to where it's going, and hopefully get there in one piece. Which shipping companies would you recommend for this job? For those who have done this, what experiences have you had, and what suggestions can you pass on to ae0nflx?

KodaK asks: "I've recently been hired by a small-but-growing financial firm to be their systems administrator (Non ex transverso sed deorsum), now they want me to evaluate and recommend telephone systems. They want call reporting, and they also want visual call management. I've looked at Asterisk, and while I'd love to play with a system like that, I'm not skilled enough to put together what they want out of it in the timeframe they need, so I've been looking at PBX systems like the Alcatel OmniPCX Enterprise and Artisoft Televantage. However, I don't know enough about phone systems to effectively evaluate them. What should I be looking for? Are there really any differences, or are they all pretty much the same? The Artisoft is Windows 2000 based and that scares me from an availability standpoint (hey, VXWorks is /designed/ to be 5 nines, you can't say that about Windows). The Alcatel is Linux at the core, but is that really meaningful when there's other systems out there designed from the ground up to be telephone systems? Any suggestions? Any warnings? I'd appreciate any information or advice you can give me on any phone systems, not just the Alcatel and Artisoft. I want to make sure I'm making the right recommendation when there's a $30k plus investment involved."