You don't need to be root to add the challenge file, just have permission to write to the website folder.
You can also use DNS verification, although that method is not present in Certbot yet. There are a few third-party clients that do support that method, however.
Good luck getting all the legacy devices understanding those prepended numbers and changed packets required to contain the extra data.
By the way IPv4 is embedded in IPv6. You can address the old IPv4 space as ":FFFF:xxx.xxx.xxx.xxx" such as
Ubuntu doesn't ship with patented codecs for many reasons, including the desire to promote non-encumbered options. They do make it quite easy to install them if you really need to, as explained here.
KDE on Fedora isn't too awful. It's gotten a lot better since about Fedora 19. In fact, it works much better for me than the default GNOME option. I believe KDE is handled by a dedicated team, so it's certainly not the afterthought it used to be. As for patented codecs, I just make sure RPM Fusion's non-free repo is enabled and I have access to cleanly packaged codecs as needed. Just install the gstreamer packages and you'll have everything you need.
You'll have a hard time finding a US-based or other major distribution supporting aac, h.264, and similar directly because of software patents that require payments to the license holder. It's why Ubuntu and Fedora both ship without that kind of support.
I have a 2011 Mazda 3 and am in California. My car doesn't have Daytime Running Lights. As far as I am aware, it's never been a legal requirement here, and likely not anywhere in the US. Some manufacturers offer them because of "safety", but it's not legally mandated.
I do agree with you on the light placement, some new models just aren't well designed in that area. Then again, I'm used to drivers not actually using their signals, so placement doesn't matter for that.
I'm not sure about the changes made with EFI booting, but for "classic" BIOS-mode booting, Windows does support multiple OS from its own bootloader. Check out info on the boot.ini (NTLDR). Heck, there's even a tool, EasyBCD, that will help you set up the booting options.
Of course, since most people that use desktops run only Windows, almost nobody has actually seen the Windows NT bootloader menu. Some of the people who used NT 3.51 or 4 might recognize it. In addition, since no consumer version of Windows until XP (the merge between the classic and NT codebases) supported multiboot, it's not a huge surprise that people don't know about this. That doesn't discount the practical issues too: editing boot.ini requires writing to an NTFS volume, which only really became possible on Linux with NTFS-3g, or you have to boot into Windows. If you were going to be using Linux primarily, it was much easier to just use lilo or grub for the bootloader.
John Romero, is that you?
My best guess is the user was thinking of the 25 pin DB connector Apple used for SCSI-1 equipment. It's really easy to confuse with a parallel port.
Three-way incandescent bulbs are still going to be sold under an allowance for specialty bulbs.
Modern LEDs are actually really good with dimmers, as long as you don't go for the ultra-cheap models. The cheap LEDs can't go as dim as the mid-price ones. I replaced some PARs in my hallway with store-brand Utilitech (Lowe's) LEDs and they work great with the dimmer I installed.
Personally, I can't complain about the color spectrum. If you're picky, Cree has their TW series that are really solid and project light just like the standard A19 incandescent to which people are familiar. The Cree bulbs even have real glass.
We warn the reader in advance that the proof presented here depends on a clever but highly unmotivated trick. -- Howard Anton, "Elementary Linear Algebra"