I just got it and played it most of last night without any problems or any memory leaks etc.
Just wondering what version people are playing, retail or the Steam version?
I'm playing the steam version
edit: I think i found the memory leak problem , it isnt a memory leak its a setting on 64 bits windows, if thats changed a time then the problems start to happen. it has to do with Data Execution Prevention (DEP) and Physical Address Extension (PAE) IF you are having the "memory problem" chances are PAE is not forceenabled To set dep off and pae on use these commands in a "command window"
after days searching on the web how to fix the crashes i finally fixed it,i did clean boot and eventually found what causing the game to crash and it was "AMD External Events Utility" and "Realtek HD Audio Manager",after closing them and disabling them from being run at start-up i played smoothly non stop till i got tired