http://bugs.winehq.org/show_bug.cgi?id=14395
--- Comment #6 from Karsten Elfenbein kelfe@gmx.de 2008-12-04 12:46:51 --- ok what I know about the leaking of memory under wine with more than 4gb ram
first I used 8gb memory wow and other apps start at around 3.8gb virt size and increase at different speed to 4gb mark where the apps starts to act up/crash apps showing this are wow while changing zones for just over time, company of heroes at the loading screen (has about 3-4k fps then drops to 150fps when it hits the 4gb mark after a few seconds) team fortress 2 is affected as well (probably all steam apps)
happens with wine and crossover a way to reduce the effects are basicly to not use the 8gb (I used the "mem" kernel parameter to limit the memory amount to 4gb) swap size is about 12gb on my system