Another person tries to log into my acc

Hello there,
there was since 2 weeks some emails that someone tried to log on my acc here. It wasnt me so i wondered what i could do against it? I dont want that someone knows my email or can log in on that or can log in here...
If there is nothing i could do against that is there a possibility to delete my acc?
I hope u could help me.

Greetings

http://forum.warmane.com/showthread.php?t=410943

Check out Edifice's posts there. It's most likely someone guessing a password in the client or mistyping their username.
If the source IP is 0.0.0.0 then it's an internal server error that occurred about 2-3 weeks ago and nothing was compromised, just someone tricked the system into sending emails to everyone, requested or not.