You probably already know this — when Adobe products misbehave, they rarely do it only on one computer. My lifesaver has always been typing the problem I'm having (sometimes I have to reword it multiple times) into the search box at http://forums.adobe.com/index.jspa

Usually there is someone having exactly the same problem, on the same operating system, and someone else with a solution. I have occasionally run across problems that have no solution until they are fixed in an upgrade, but then someone usually has figured out a work-around. This is essential because I almost always have a major glitch with a big job that is due later that same day.

I also keep one version back on my computer for quite awhile after upgrading.

Keeping my fingers crossed for you,
Deb