The ikonboard.cgi script was running amok, apparently. I just got home and noticed it. Even though I told them to call me on the phone if anything happened on the account, they didn't, so I didn't find out until now. It might go down again randomly if the script is still misbehaving, although I don't even know what caused it in the first place. Hopefully, they can give me some information more than their "semi-automated message". In an unrelated note, today the bank shut off my debit card because I started using it. Sigh.