My balance on mybitcoin is now 0, too.

My bitcoins went to 1MAazCWMydsQB5ynYXqSGQDjNQMN3HFmEu as well.

I had only 0.84BTC, so I don't really care, but I just wanted to confirm what the OP said.

However, it is possible I used the same password for my Mt. Gox account (which I never really used. I had no $ nor BTC in Mt. Gox, so once again, I don't really care).