Hi I have now narrowed the problem to two loops. One loop in each of two threads, e.g. a producer/consumer pattern. I would like to be able to do according to the following: 1. Take a snapshot of the memory in one of the loops 2. execute some iterations in the loop 3. Take a new snapshot of the memory 4. Make a comparsion of the two to try to understand where the leak is. Is this possible with the available tools? If so, can yo ugive some indications of how to do it. Regards Anders