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There are 5 folders that are safe for you to delete: Cache, Errors, Interface, Logs, and WTF.
They all get regenerated the next time you log in.
Any Patch .EXE installer (IE WoW-3.3.5.12213-to-3.3.5.12340-enUS-patch.exe) is safe as well.
Of course, you could always just back up your Interface/WTF folders and give that ol' Repair.exe a double click, but since you stated that you just copied over the WoW folder each time you reinstall windows, you might run into problems since your Windows install will be lacking any registry entries for game (I might be wrong here).
Last edited by aceman67 : 09-21-10 at 11:16 AM.
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