I haven't tried SP2 yet, but you should look into the personal firewall settings. SP2 enables the firewall and some stiffer security settings by default when you turn it on. You might see if you can temporarily disable the firewall and then try updating awasu. If it works, then there should be some configuration that can be done to allow the firewall and awasu to run.... probably opening some ports or giving the awasu exe some special permissions.
Anyway, that's just a guess, but it's something to try while you wait for taka to get a copy of SP2 and see what broke.