Just in case anybody cares, it is also possible to use Flex Builder on Linux. Since I don't normally use any non-free software, and I do a lot of Linux sys admin, thats good for me. There are a few apps I can't duplicate, like Illustrator and Google Sketchup and Rhino, but mostly I don't miss anything from Windows-land. true I don't care about iTunes&music, but I do subscribe to podcasts. (I don't do professional graphics or audio.)
In the last year or so the package system for Ubuntu has gotten mature, so that software installation is just select and click. It used to be a PITA sometimes. Most of the sys admin apps now work in KDE, too. Theres a few things that still don't work, but in Linux you can be pretty sure they'll be fixed. I like OSX, too, and used DOS and Windows since 1985. just sayin'
