Ok, so i have psm setup as a service currently, but even before I ever did this i had the same problem. Basicly what is happening is my computer boots up everything works perfectly. I can stream anything I want all my files work perfectly. If i play a DVD off of the PS3 then exit out and back to the dashboard, psm is not there. The only way to get it back is to restart the service. Im running Vista 64 and I've noticed that on my XP partition that this never happens, and I haven't seen it happen with Windows 7. I'm sure this has been asked before but after searching through 10+ pages I decided to ask.