@cablenaute A: The same thing Donald Trump would say... Your Fired! Obviously do what it takes to get your work done... blaming PT wont get you to far even if it turns out to be a PT problem.
refer to this thread for some problem solving techniques
http://duc.digidesign.com/showthread.php?t=261479
the OP did not return so i think removing some ram may have solved the problem in that case.
Have you followed all of the sudgestions
HERE ?