We have been having a problem over the past few weeks where our repositories are randomly not updating. The errors we get are:
The semaphore timeout has expired, The specified network name no longer exists, The process cannot access the file because it's already being used by another process.
We have 8 repositories and out of them 2 update all the time no problems and the others will randomly fail with the above errors. I have changed the times the updates run, have deleted the repositories, recreated the master repository and re-installed the Symantec backup agent.