You know, so many people have hijacked this thread that I have gotten all mixed up as to who posted what. (It is also interesting that all of the moderators sat this one out; and with some of the attitudes displayed, I am starting to understand why.)
Alf is right. If many other people are using 9.0e without issues (and they are), then the issue has to be hardware or software. The truth does not change just because one does not want to hear it.
Jonathan, assuming your hardware is nothing unusual, have you tried Format C:\? I know that is never fun, and it takes a long time, but a clean install can work wonders. Plus, it is much cheaper as a troubleshooting step than dropping $2500.00 on CS5; and as Steve said (whether on this thread or another one), if your system is not stable under Vegas you won’t be under Premiere.
Norman Willis
http://www.nazareneisrael.org