microsoft windows event logger error

Hello everyone, im having a wierd error on 3 workstations.
When the users is trying to autenticate his account, the local system returns that he's security event logger is full and only de administrator can solve this error.
I have logged in, and i have checked the event logger settings, and its there after 7 days he will clean or replace for the new ones, but for some reason he is not doing that.
Anyone had this problem? The solution i found is to clear the log, but then he gets full and the same error occurs :(

I have seen something like that in Windows NT 4.0 unfortunately I never found a solution other than to reinstall the OS.

What version of Windows is it?

:)

windows XP professional

Well, you could try increasing the size of the file and changing the 7 days to 8. What I am suggesting is that resetting the parameters may persuade it to work.

What exactly is filling the log up?

Are there any unusual messages in the other logs?

:)

not really, just the security logs, you know.... success audit access to bla bla bla
stuff like that
well im going to try that.
Thanks