I've used Linux since 1998 (when I started studying at the CS dept. where it originated from) and Ubuntu since around 2006. Nowadays Ubuntu is clearly the distro-of-choice for my development rig at work (while at home I mostly use Macs).
Earlier, I have asked and answered many Ubuntu questions at Super User. But I guess I'll use this site now; at least there's a lot higher concentration of Ubuntu knowhow here.