In the event log of my Terminal Server the following is logged every 2 minutes
An I/O operation initiated by the Registry failed unrecoverably. The Registry could not read in, or write out, or flush, one of the files that contain the system's image of the Registry.
It appears the domain GPOs are not being applied properly as well, when I run RSOP.msc for a standard user it throws up the following error:
"\\%SERVERNAME%\admin$\System32\GroupPolicy\Adm\conf.adm" Error - Access is denied.
The above relates to the local group policy. It also appears the dekstop and icons do not automatically load for the user, they have to use CTRL,ALT,END to invoke the task manager and run explorer.exe which provides them with the desktop screen