December 8, 2006
Windows XP and Solaris 10 (professionally); Ubuntu, Linspire and Maemo (as a hobby)
on and off since 2004
I began developing software as a hobby in 1978 and professionally in 1982, using everything from 6502 assembly to C, Perl and Ada. Python is currently my preferred cross-platform language, though I have limited hacking time nowadays.
PyCon 2008 was the best ever!