No, no, its just the unpatched P4. Yours is a regular problem with pre-patch version. Thats why it was the first thing that came to mind when you described the problem. Most of the problems you hear about recently are probably with ProPack, which is in its first release and does still need some patches. The older P4 patches, on the other hand, cleared up virtually all the crash problems with P4 (at least for most folks). I don't believe anyone would recommend against installing them now.