Very Bizarre Error with YouTube (unable to approve/remove comments)

Ok, this is the strangest error I have ever run into in almost 20 years of using computers.

A couple days ago, I stopped being able to approve or remove comments on my videos or comment on ANY videos. I share an account with my girlfriend and she can approve and remove comments, but I can't.

At first I thought it might be one of the bizarre problems that occasionally happen with cached files, so I cleared everything out... no luck. Tried a different browser, no luck. Restarted, tried both browsers, nothing. Logged into a different account on my computer, no luck. Logged into a different YouTube account, didn't do anything...

Here's what I've tried:

mac pro (OS 10.5): Firefox, Safari.
MacBook (OS 10.4): Firefox, Safari.
Dell B120 (Windows XP): Firefox, Internet Explorer.
ASUS Eee PC (Linux): Firefox.

All of these computers are at my place and ALL of them have this problem. I can block and unblock users, but I can't approve or remove comments, or make my own comments.

With the same account, but with a different internet connection everything works for my girlfriend. I know I really should bring one of the laptops over to her place, but haven't had a chance to do that yet.

Anyone else experienced this? Anyone know how to fix it?

It's so lame.