My SharePoint 2010 Timer Service (Administrative Tools -> Services) keeps stopping. The service is set to start up automatically, and the service account is SPFarm. When attempting a manual start, i get "Error 1069: The service did not start due to a logon failure".
If I select Properties -> Log On and manually enter the password for the account, manual service start will succeed and the service runs for about 24 hours. After this, it stops and on restart gives the error message above. From this, I might guess that the service has incorrect credentials stored somewhere?
There are numerous other posts on the Net about these problems, but I have attempted the common suggestions I found (service user is dbcreator and securityadmin, db_owner for configuration databases, and also member of local Administrators group). No luck on that front.