I uninstalled Ledger completely and reinstalled it from the CD and YES, I am working from a Workstation. I just installed the latest service pack which again froze for a period and the server responded in the same way that it did during Integrity Checks from a Workstation - mouse and keyboard weren't responding, lan light on the back of the server flashes furiously, messages from the UPS. We do have Adagio installed on the Server - however, I am doing the software installs, service pack updates, etc. from the Workstation where the Software was installed initially - not from the server.

Same errors in GL so I am trying to restore a back up now.

Yes, we are looking at moving the server and adding another workstation in the near future.