My first install updated fine, but I had a problem with the second folder. This led to a minor mess exacerbated by a disk error that pretty much blew up that second folder. I figured it was a good time to clean up the various WoW folders that I use, and everything's up and running. I guess I wasn't upset because I hadn't planned on playing last night, just on getting them updated. If I'd had plans for last night I'd probably have been tearing my hair out.