are these problems solved for everyone now?
its IP based, which is why some can get on with a proxy, the server essentially never goes down, data center scheduled maintenance. is done 12am-5am, and happens about twice a year, so the more info we get, as someone suggested above, region, Ip address, times it happened it it can be solved, but since no one has posted here since feb, im assuming this isnt really happening much anymore... I feel it was probably due to some growing pains in banning spam accounts and some fan IP's get temporarily caught in the crossfire... but hard to say for sure without further details.
Thanks