If you check the security event logs on the domain controller you should be able to see when (at what time) the accounts get locked. That might give you a further clue as to whether you're following the right lines of enquiry or not.
As to other possibilities, I've seen repeated account lockouts where users are logged in on multiple machines and the password gets changed. I've also seen it happen when a machine is locked and the password gets changed
Re: W2K Domain account's locking out every day!
13 years 6 months ago #7119
But still not sure.. Because why would both computer account's (which are the only 2 that map drives to a different domain) be corrupted at the same time? When all other computer accounts on the domain are ok!