I have not read any estimates about the server fix.
Just after the so-called hak attack, I was interested to see if I could make a new account for MP games so i did, got the confirmation email and joined a few servers without a hitch. However, some servers use different authentication procedures so it is quite possible I may not be able to play on those with my older account or the new one I created.
AFAIK, it is as easy as selecting Multiplayer and the button in the lower LH corner to create a new account.
Unless I am missing something here..