We have an intranet database application with business logic in VFP7 under COM+ on Win2k Advanced Servers. (not using any .NET)
When QA is testing, they will be frozen with only around 7 or 8 screens active. A dump of file locking shows that the vfp7t.dll is (or seems to be) the culprit, with the same number of locks as screens active (naturally).
Across instances of freezing, there doesn't seem to be a common COM server involved.

Any ideas?
I've kept this question general at first to get a wider variety of narrowing down questions.
TIA