Download flabortast's cache folder (I linked it earlier on this page) and replace your cache folder with it. The maps (and other temp files) are found within the cache folder.
To find your cache folder (in windows xp), open up windows explorer, then go to tools -> folder options -> view -> show hidden files and folders. then go to C: -> documents and settings -> username -> local settings -> application data -> blizzard entertainment -> battle.net. the cache folder should be within "battle.net."








