Just thought I'd let y'all know that the forum has been under a methodical attack for the past week (and before that too).
The spammers are going thru the user accounts and trying to login. They aren't trying brute force on a single account - they are looking for the one weak password out there. They try one person's account, when they fail to login, they try the next one.
I have no way of telling what passwords they are trying, but make sure your password isn't something easy like password or camaro!