What to do if someone is trying to distributed brute force my account?

[JonUrban]

I just got two. However, when I logged in here, my original password worked without issue. Very odd. What would they accomplish? I checked the login link in the email and it looked like a direct link, not a redirect.

Mine occured at 7:24PM, IP addresses were 201.24.152.98
and 178.213.33.129

Dear JonUrban,

Your account on vBulletin.org Forum 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: 178.213.33.129

Don't forget that the password is case sensitive. Forgotten your password? Use the link below:
https://vborg.vbsupport.ru/login.php?do=lostpw

All the best,
vBulletin.org Forum

--------------- Added [DATE]1306635143[/DATE] at [TIME]1306635143[/TIME] ---------------

Here's the header, minus my email address:

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Date: Sat, 28 May 2011 16:24:30 -0700
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Subject: Account on vBulletin.org Forum locked out
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