Hi there..
I had SP2 already installed with FW set to on and these settings did not change.. after the WGA tool was run and a restart, the AVG (anti-virus 'free' version) said something like "AVG is not able to start and needs to be re-installed"
so I had to reinstall it...
in fact, I did a windows update yesterday and immediately after the update had installed and restarted a similar thing happened, this time when AVG started it said that it needs to update itself... it had already done that earlier the same day..?!
I hope this is not going to be a loop... windows update=AVG update=windows update etc.. etc..
doobre