Sorry I haven't posted in a while. Junior year in high school two weeks before summer break--what can I say, between AP tests, SATIs, SATIIs, finals, final projects, paper....
Anyways, good news: Ubuntu 6.06 "Dapper Drake" is scheduled for official release tomorrow.
I've been using Ubuntu since version 5.04, and using 6.06 since its third testing phase, codenamed "Flight 3." After trying various Linux distributions, Ubuntu helped me through the learning curve (although I've got a long long long long long way to go before I can even call myself "advanced").
I've set up Dapper Flight 3 as an FTP server for my home WLAN, so I can vouch for its base-server functionality as well as its desktop user functionality. Superb.
Dapper, as of tomorrow, will be out of testing and in its full support cycle. I highly recommend grabbing the LiveCD to check it out, and then at least switch an old Windows box to dual boot--the partitioner in the installer is one of the easiest to use I've ever seen. Download the .iso files with BitTorrent--for the file sizes, it's extremely fast. Or use Ubuntu's ShipIt requests--they'll send you a free CD, and extra copies to give your friends (if you're willing to wait, which I'm not).
All downloads, in ISO and TORRENT formats, for x86, PowerPC, and AMD64 architectures, available here.
Ubuntu uses GNOME to power its GUI, but KDE-club members can download Kubuntu. Check out ubuntulinux.org for all the information you want. And if you want more, check out their forums--it's the best web community I've come across.