Unable to patch any games.

Recently, any time I try to patch/start an MMO, I'm unable to connect to the server.

At first I thought that I was just getting maintenances, but I've tried at least six different games, including Mabinogi, Silkroad, IMAGINE, and WoW.

It just refuses to connect, usually giving me an error such as "unable to connect to server, possible maintenance."

I've checked my firewall etc, and nothing's blocking any of the games. My internet's quite obviously working, as I'm posting this. Does anyone have any ideas as to what may be wrong? Thanks. (:

Which antivirus do you have? Did you change recently from ISP or did you change any internet settings?

I don't have an antivirus installed at the moment. I have the same ISP and I haven't changed any internet settings, either. :l

Disable the firewall completely if you have a 3rd party firewall. If it's the windows one, you should have that one disabled at all times. It's only good for blocking windows updates.
Try to update your network card's drivers.

If those don't work, I can't help further other then saying "Call your ISP.".

I haven't got any firewall on at all. :l I'll try updating my network drivers, though. Thanks for the suggestions. :]

Does anyone else have any ideas, in case that doesn't work?