http://bugs.winehq.org/show_bug.cgi?id=18452
--- Comment #10 from Carlos Laviola carlos@laviola.org 2009-07-07 23:25:24 --- The following comment helped me get rid of these crashes:
"+ No crash whatsoever (Most of the crashes that happen in wow are related to the cache folder that people use after an update of the game client. You must clean the folder after updating)"
Deleting the cache folder has made the game run for a very long time so far, way past any previous attempts. Maybe this should be on the app's main description, so someone searching for "crash" can easily find this suggestion.