@gt65345:Whoops... yeah, meant choice B.
I never looked at the dumps from this customer for this issue - I solved it by looking at perfmon. So I don't have any dump analysis to share. But if I did, I would be employing the steps in Episode 5 to find what threads are consuming the cpu. All I would expect to find are GC threads which may or may not be in the midst of a GC, and worker threads with or without custom code doing whatever work they're supposed to do on the stack. I say "with or without" b/c the dump may be captured at a time when threads are performing certain work or waiting for work.