The disable inactive users module is also disabling new accounts. For example, if this module is setup to disable only accounts that have been inactive for 190 days, but if new user accounts are created and if this module runs to search for inactive accounts it will disable these new accounts. Also it was noticed the following:
1- In the preview screen, accounts display under Last logon date column 12/31/1600 6:00:00 PM, but if you look the object in AD it shows LastLogonTimestamp attribute as <not set>.
2- Once the task run and disables users, the Last Logon Date appears to show correctly, but User objects are being moved to the Computer section along with disabled computer objects when they are supposed to be under the Users section under Inactive Users & Computer History.