James Mckenzie wrote: > The question I have is this immediately after running the program or after a set time period, say ten minutes? If it is immediately, then my statement is basically correct and work needs to be done to optimize code for 64 bit. If it is after ten minutes, then there is a leak somewhere that is causing this and it should be investigated. This is immediately after the start (<1 min). Also I tried the wine 32bit version ("w32") on all 3 systems (it was exactly the same build). It doesn't look like memory leak, because the numbers were constant over this time. But I could run it a little bit longer.