I usually write my classes in C++ and check if they leak memory using valgrind on Linux platform. I'm not satisfied until all the heap memory is freed.

Starting to write in Qt, I found how many leaks valgrind detects, also on a simple project. They are so many that it's difficult to detect my same leaks.

I read somewhere that is possibile to use a suppression files for valgrind which helps filtering out the unwanted leaks, but I can't find it.

I'm using Ubuntu 11.04 x64, g++ 4.5, Qt 4.7.
Does somebody know how to cope with this problem?