Ahh, that old "you play WoW so you must be addicted" chestnut. Funny how no one assumes if you drink you must be an alcoholic.
Anyway, as has been mentioned I would avoid the blizz downloader completely. I get all my patches from fileplanet, i'm just a member so no subs. You may have to wait 20 mins for it to start but at least you'll have it soon after that rather than the 3 days the blizz thing takes. If you're considering a re-install there will be a big patch containing all the patches up to present that you can DL, usually about 450mb, although i'm not sure the last one of these had the patch to 2.01 included.