I just placed Ubuntu on my laptop little over a week ago (dual boot). I like it, but am not willing to give up XP yet due to software compatibility issues. Yes, I know about Wine, but not all Windows software will run on Linux. I’ll probably get a partition manager and expand my 7.5Gb Linux partition to make more use of it.
Computers are cheap enough now you can afford to keep a windows PC around until msoft goes away.