If you see an error that specifically mentions the DBCache.cpp file, this is a strong indication that one or more of the cache files have become corrupted. Luckily, these are temporary files that can be deleted. Once removed, new versions of these files will be created the next time the game is launched. These files are located inside the WDB folder, which is inside the root directory for the game.
ef það virkar ekki repair hérna
http://ftp.blizzard.com/pub/WoW/other/Repair.zipef það virkar ekki updata tölluna :)