Just the same problem here. I have been uninstalling and installing PP CS 5.5 for a couple of times and it was solved after a radical uninstall first, but it came back after a few weeks. We really need an update, but as CS6 is out now, Adobe probably don’t look after problems with previous editions. Though, that would be nice, since we then also know they do something with crash reports.
Did the topic starter probably solve the problem?