Thanks for the responses guys. Well, I can't go to a different format, PDF is how I live or die. A large part of my job entails converting documents of various formats over to PDF, editing them to make them conform with the Federal District Court's filing criteria, then filing electronically with the Court.
I don't think many federal clerks or judges are going to be too interested in downloading whatever viewers are necessary to read what I file on behalf of our clients heheh.
Still, I thank you all for the responses. I am definitely going to stick with Ubuntu....but it looks like instead of upgrading to Jaunty this weekend, I'll be doing a clean format so I can dual boot XP and Jaunty.