Does anyone know much about the above service? I know what it does, but I'm not sure why it's been the cause of two lost days!

Basically, I have had issues where if I start Firefox, and some other programs, I get the spinning circle and nothing more. It happens with most installers and the network and sharing center too. Task Manager shows the program, but with very small memory usage. Nothing else happens until I bomb it. I can start the program "as administrator", but that causes explorer.exe issues when I exit the program. Usually, the first time I use a program, it works, if I try to use it again after closing then the problem occurs.

Anyway, after suspecting all manor of hardware faults, and Windows Updates, drivers and what must be everything else, I have narrowed it down to this service. If I disable it, everything is fine, leave it on, and the issues are there.