PHP mem leaks

Shoot me down if this should go on the gen list but I think this question would get a better answer on this list. I am running a large PHP/MySQL/Apache driven website and I am finding that the apache Processes get larger and larger as the days go on. When I stop/start apache the processes are around 16-17 meg each and after a week they are about 40meg each and if we then get a large in flux of traffic say a Monday lunch time the server just pages out and dies... I have been on the apache list given them all my modules that I have running and they pointed the finger at PHP, I was told to change maxrequestsperchild to 100 but this made no difference. Is there a fix for this? or a planned fix for this? Cheers John Wards SportNetwork.net