Service login account password becomes corrupted

[Guest axeman41]

We have several services set to login/start using a specific domain

administrator account. The service will start fine upon reboot or

manual restart of the service. However, after a random period of time

the event log fills with an error: 7038 logon failure: unkown user or

bad password.

 

When we retype the same password, and nothing else is changed, the

service starts up fine.

 

It seems that the password or authentication process is becoming

corrupt.