I've gotten this email 37 times, each with a different IP, from the Steam User Forums.
Dear xxxxxxx,
Your account on Steam Users' Forums has been locked because someone has tried to log into the account with the wrong password more than 5 times. You will be able to attempt to log in again in another 15 minutes.
The person trying to log into your account had the following IP address: 211.23.82.90
And I don't know what to make of it. I only posted once on the forums anyways, whats going on?