The number of people it's affecting is pretty irrelevant to the argument. 3 pages of people saying they can't stay logged into the game in the first day of the of the patch is a pretty clear indication it's widespread.
Do you live in asia ? maybe this is your issue if you play on APAC ? http://advisories.internode.on.net/item/10735/
That advisory works both ways for people in Asia to Australia.