I hope this isn't something to do with the screen flickering mentioned in pinned thread, or I wouldn't have started this thread. My problem is just that on wake-up any open applications crash while they flash on and off the screen. Dillo seems to survive, but big apps like Firefox crash, or at best get backgrounded.
I am presently running the beta but might go back to an earlier rc if no one can help. I am not convinced it is the beta though, as I saw it happen with rc12 before I reflashed.