When you say it is working fine, do you just mean you are able to log in to SAS Management Console as sastrust@saspw? Have you verified that all of the SAS mid-tier applications are working too? I ask because if you didn't use SAS Deployment Manager to change the password (and propogate the change out to those components that use it) then it is unlikely that the entire platform will be working corrrectly (unless the new password is the same as the old one).
The SAS Users Group for Administrators (SUGA) is open to all SAS administrators and architects who install, update, manage or maintain a SAS deployment.