Is there a tool for finding memory leaks?
There are macros in Symbian to check for memory leaks. __UHEAP_MARK, __UHEAP_MARKEND etc. Look in SDK help for more details.
For your information, in the debug mode, when you exit your application, if there is a memory leak, the emulator will complain it. In this case, most of the developers can find the problem in the early stage of development.