I also had some very weird memory leaking behaviour on a UNIX box, that was never successfully solved. Change in memory consumption when using debugger

One especially weird aspect was that if I ran my program in the debugger, the memory leaks disappeared.

But, it only happened on Solaris 2.7 and not 2.8. It seems there the system memory management (by Solaris) was flawed, and it was fixed for 2.8. Sorry, I don't remember the details.

Maybe this is the problem??

Good Luck

Sandy

UPDATE: Another related node Managing System Memory Resources