One of the user accounts on a Windows 2003 server is frequently locked. Each time the "Account is locked" (roughly translated) checkbox is enabled in the Account Properties -> Account tab. The event viewer only mentions that the account is locked, or that I've unlocked it.
However, I don't see any message why the account gets locked in the first place. Are there know reasons why an account gets locked, or is there a way to find out why this happens?