"I think with a web service you'll run into issues with IIS, such as timeouts, memory leaks, etc."
Not if you use a singleton ojbect. "What happens to an active web service when IIS recycles itself? I would guess that all child processes get recycled as well." The garbage collector will not collect an object if you tell it not to. You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.
