http://bugs.winehq.org/show_bug.cgi?id=14863
--- Comment #19 from Damjan Jovanovic damjan.jov@gmail.com 2008-08-21 08:49:13 --- Created an attachment (id=15521) --> (http://bugs.winehq.org/attachment.cgi?id=15521) do not release the DataCache
It's some kind of reference leak, hacking it to never release the DataCache fixes the bug.