Waiting for threads

[stratoforce]

Hi.
Im having a problem and can't find a solution.

The problem happens when i WaitForSingleObject (or multiple).
Im waiting for a thread to terminate, but even after the thread ends, the program blocks on WaitForSingleObject.

I have tried creating a small program to test things and it works ok, but its not working with my real thread. (Even if my real thread ends correctly )

So, the question is, is there any pre-requisite to WaitForSingleObject to work?

PS: My real thread uses mutex for some stuff, but since it ends correctly(releasing the mutex), i don't think my problem is because of some kind of deadlock.

Thanks in advance.