It COULD be the gun switch. It stops, you cycle the power, you obviously reset what you are doing physically in the process and get a new grip on the gun switch which just happens to start working again after the power cycle. I doubt it's that simple but I'd make darn sure first before I tear into boards and whatnot.
Dan from Raleigh, NC
If it's stupid but it works, it's not stupid.
"What is your host's purpose for the party? Surely not for you to enjoy yourself; if that were their sole purpose, they'd have sent champagne and women over to your place by taxi." P.J. O'Rourke