dynamo52 writes "I'm a freelance network admin serving mainly small business clients. Over the last few months, I have noticed that any time I run any type of bandwidth testing for clients with Comcast accounts, the results have been amazingly fast — with some connections, Speakeasy will report up to 15 Mbps down and 4 Mbps up. Of course, clients get nowhere near this performance in everyday usage. (This can be quite annoying when trying to determine whether a client needs to switch over to a T1 or if their current ISP will suffice.) Upon further investigation, it appears that Comcast is delivering this bandwidth only for a few seconds after any new request and it is immediately throttled down. Doing a download and upload test using a significantly large file (100+ MB) yields results more in line with everyday usage experience, usually about 1.2 Mbps down and about 250 Kbps up (but it varies). Is there any valid reason why Comcast would front-load transfers in this way, or is it merely an effort to prevent end-users from being able to assess their bandwidth accurately? Does anybody know of other ISPs using similar practices?"

The Narrative Fallacy writes "Scott Aaronson has posted a draft of his article from this month's Scientific American on the limitations of quantum computers (PDF) discussing the question: Will quantum computers let us transcend the human condition and become as powerful as gods, or are they a physical absurdity destined to be exposed as the twenty-first century's perpetual-motion machine? Aaronson says that while a quantum computer could quickly factor large numbers, and thereby break most of the cryptographic codes used on the Internet today, there's reason to think that not even a quantum computer could solve the crucial class of NP-complete problems efficiently. Aaronson contends that any method for solving NP-complete problems in polynomial time may violate the laws of physics and that this may be a fundamental limitation on technology no different than the second law of thermodynamics or the impossibility of faster-than-light communication."

An anonymous reader writes "Amateur satellite watcher Ted Molczan notes that a "Notice to Airmen" (NOTAM) has been issued announcing restricted airspace for February 21, between 02:30 and 05:00 UTC, in a region near Hawaii. Stricken satellite USA 193, which the US has announced plans to shoot down, will pass over this area at about 03:30. Interestingly, this is during the totality of Wednesday's lunar eclipse, which may or may not make debris easier to observe."

TechDirt has an interesting article about a UK-based company that is trying to work with ISPs to make use of user surfing data to serve targeted ads. "Late last year, we heard about a company that was trying to work with ISPs to make use of that data themselves to insert their own ads based on your surfing history -- and now we've got the first report of some big ISPs moving into this realm. Over in the UK three big ISPs, BT, Carphone Warehouse and Virgin Media have announced plans to use your clickstream data to insert relevant ads as you surf through a new startup called Phorm."

DrButts writes "An inventor in British Columbia wants to be the first to launch a pop bottle rocket into space. 'This could be impossible, but the CEO of AntiGravity Research already holds the altitude record for boosting an elongated plastic pop bottle — propelled by a bicycle pump, water and a bit of soap — into the air. Firing the ubiquitous, two-litre plastic container usually consigned to the recycle bin into space might create a whole new definition for space junk, but the dream keeps Schellenberg going.'"

Parallax Blue writes "Millionaire adventurer Steve Fossett, who risked his life seeking to set records in high-tech balloons, gliders and jets, was declared dead Friday, 5 months after he vanished while flying in an ordinary small plane. The self-made business tycoon, who in 2002 became the first person to circle the world solo in a balloon, was last seen Sept. 3 after taking off in a single-engine plane from an airstrip near Yerington, Nev., heading toward Bishop, Calif. He was 63."

jlgolson writes "Yesterday, Rush Limbaugh complained on his radio program about some problems that he was having with his Mac: 'Mr. Jobs, please help me. I know we don't agree on anything ... But can you put me to somebody that can get this going, because I know it's gotta work for most people. What am I doing wrong?' Eventually he shared that he was running into actual problems with Time Machine and Back to My Mac. Can you fix them?"

ktulus cry brings news of a device that can power portable gadgets, prosthetic joints, and other mobile appliances by harvesting energy generated by walking. Researchers are working on making the device — still a moderately cumbersome 3.5 pounds — smaller while maintaining its energy harvesting capacity. CNet has a write-up with more pictures and a diagram of the device. "In the mode in which the brace is only activated while the knee is braking, the subjects required less than one watt of extra metabolic power for each watt of electricity they generated. A typical hand-crank generator, for comparison, takes an average of 6.4 watts of metabolic power to generate one watt of electricity because of inefficiencies of muscles and generators. A lighter version would be helpful to hikers or soldiers who don't have easy access to electricity. And the scientists say similar mechanisms could be built into prosthetic knees other implantable devices such as pacemakers or neurotransmitters that today require a battery, and periodic surgery to replace that battery."

Septimus writes "At this weeks ISSCC, IBM announced that the Cell CPU used in the PlayStation 3 will soon make the transition to IBM's next-gen 45nm high-k process. 'The 45nm Cell will use about 40 percent less power than its 65nm predecessor, and its die area will be reduced by 34 percent. The greatly reduced power budget will cut down on the amount of active cooling required by the console, which in turn will make it cheaper to produce and more reliable (this means fewer warrantied returns). Also affecting Sony's per-unit cost is the reduction in overall die size. A smaller die means a smaller, cheaper package; it also means that yields will be better and that each chip will cost less overall.'"

Dr.Merkwurdigeliebe writes ""Enhanced drivers licenses such as those to be issued in B.C. will lay the groundwork for a national identity card", federal privacy commissioner Jennifer Stoddart said yesterday. Stoddart said the licenses, touted as an alternative to a passport for the purpose of crossing the U.S. border, closely resemble the Real ID program in the United States. She characterized that program as a way of introducing a "type of national identity card" for Americans."

What is? writes "A British company has designed an eco-friendly airliner that could make a trip from London to Sydney in under five hours. Reaction Engines has received funding from the European Space Agency to design the plane as part of the Long-Term Advanced Propulsion Concepts and Technologies project. The A2 airliner would be capable of carrying 300 passengers at speeds of up to Mach 5."

An anonymous reader writes "CNET is running an article about tough technology, which aptly includes the Nintendo Game Boy, a device so tough that mine still works after many years. 'There's no two ways about it: the original Game Boy is one of the hardest gadgets ever conceived. Rumor has it this beige behemoth isn't made of plastic, but from the skulls of fallen Gurkhas. If you ever saw one that was broken, it's because it lost a boxing match with a nuclear bomb — on points.' So do you agree that the Game Boy is the toughest consumer electronics device ever made?"

Intel has announced a new technique that allows them to effectively double the storage capacity of a single phase-change memory cell without adding cost to the current fabrication process. "Phase-change memory differs from other solid-state memory technologies such as flash and random-access memory because it doesn't use electrons to store data. Instead, it relies on the material's own arrangement of atoms, known as its physical state. Previously, phase-change memory was designed to take advantage of only two states: one in which atoms are loosely organized (amorphous), and another where they are rigidly structured (crystalline). But in a paper presented at the International Solid State Circuits Conference in San Francisco, researchers illustrated that there are two more distinct states that fall between amorphous and crystalline, and that these states can be used to store data."

ZerothOfTheLaw writes "It appears that Google is going to eliminate Adsense for Domains for all domains younger than five days old. From the post 'The Good news is that the Quantity of advertising will be spread among fewer domains now and so those domain owners that actually own real full domains should receive more money if bid prices start to rise as a result of this. However some advocates of Domain Tasting say that perhaps no one will be able to serve the niche for some ads and no one will make money on the unserved ads.'"

apolloose noted Bruce Schneier's latest entry on Wired where he talks about insecured wifi networks, and suggests that you Steal this WiFi. Basically, since insecure WiFi is everywhere, why not? You're helping make the world a little better for someone else.