Hmmmmm,

Stupid answer follows, my best shot, without going technical [giggle]

Have you tried closing them, and then rebooting? (my thinking on this: if you left them open, and they restarted on reboot, maybe, closing them before rebooting, may, not start them again [?)

I know, I know, stupid answer, but its a shot...
Hope this helps,
Ms. Cuddles