Am I getting hacked or is it just a glitch? (Facebook)?

[MagsteR]

I was messaging my friend yesterday and when I logged back on about 2 hours later, it said that I messaged her at 11:58 p.m. "Peter". I messaged her in the afternoon, so obviously it was impossible for me to do that. Then, I tried to reboot the computer and when I logged back on, there again, second message written by me "Peter" at 11:58 p.m. Now, I am trying to log off my account and log back in and it still won't stop. I don't think I'm getting hacked since the time is always 11:58, but is this a normal Facebook glitch? - and if it is, how can I stop it?

Please help!

-P.S.-
The messages only happen to one friend and not to anyone else I message.

[Annie]

It's a stupid Facebook glitch, I have the same problem with a few of my own Facebook messages. It's kinda annoying. Just ignore it.