OK Thanks. I have my windows XP machine set up with mulitple users, so when each user logs in, they run an instance of WCG, but they are all the same Device name. If I rename them to something unique I should be all set?

If you have several users on the machine, each of which has their own agent installation, then first, check to make sure they were all installed in unique directories. Furthermore, you won't be able to run two or more of them simultaneously.

It is better to run just one agent all the time, rather than having multiple users each running a different instance once in a while. This is likely to make the work units time out before they finish.

An alternative to running an agent as a service, some users have had success using Start -> Programs -> Accessories -> System Tools -> Scheduled Tasks to create a task that runs ud.exe all the time under the one user, who installed the agent, regardless of who is logged on. The agent should then be removed from the Startup folder for that user. The only problem is that this will not show the screen saver image for any of the users and won't provide an icon in the system tray for checking on the agent. However, you could disable the scheduled task once in a while and then check on the agent using the install id and running ud.exe manually.

I decided to set it up as an agent using the Scheduled Tasks... seemed a lot easier than running as a service. I was a little disappointed that you no longer have a tray icon to check the status, but I discovered that if you have WCG set as your screensaver (as I do), you can go to display properties, and preview the SS. It gives you the percentage complete for that task. I would assume (maybe wrongly) that if there was some problem preventing it from running, this method will hopefully give you a clue.