http://bugs.winehq.org/show_bug.cgi?id=24870
--- Comment #8 from paulo i30817@gmail.com 2010-10-24 02:45:15 CDT --- Even hex edits with imagecfg http://www.thief-thecircle.com/guides/hyperthreading/
on a windows machine don't prevent this. Only way i've found is to use the wine taskmgr clone to set the affinity.
This is obviously not ideal.