I'm using Linux just because I don't want to give M$ any of my $. I find that I get all that I need done with fedora. I have issues with an OS phoning home to verify that I'm not a thief. While at work I still need to use windows but at least at home, I'm MS free
As for ubuntu 9.10, I downloaded it last night and threw it in a vmware. While the release notes are somewhat meager with what's been updated/added it seems solid enough and a good incremental update to ubuntu. Clearly not to the level of people foaming at the mouth for it. I've seen too many people way excited for this and I'm not really seeing the big deal :/