Profiling static memory usage

Hi,

We have what appears to be a memory leak in our game. As the game is run (especially as levels are reloaded) performance steadily degrades until the game eventually becomes unplayable. We do use quite a few static memory structures/singletons and my intuition indicates that that is where the memory leak is accumulating. Is there any way I can use the Unity profiler, or another profiler to track this down? Any other advice will also be appreciated.