Was My Account compromised

[Nadavy]

Hey everybody, I have a question.
One of my fellow forum owners told me that I entered in several of my colleagues passwords into the public chatbox on my forum. They said I was using an IP address I had never used before. Obviously.... I do not recollect ever doing this. What do you guys think happened?
I don't think somebody hacked my account because even if I wanted to find my user's passwords, I would not be able to. Could one of the mods on my forum be causing some sort of security issue?

[Lynne]

Check your admin logs and see what 'you' have done lately in your admin cp. You can reset passwords from the admin cp, so a person could log on as you, change some passwords, and then post them.

You've reset your password, I hope?