Recently sometimes i would be viewing any normal screen & then lock the screen with the flick switch. when i go to unlock it maybe 10 secs later nothing happens. power key, sliding keyboard makes no differennce, what i have to do is reinsert battery to power on again. Anyone else experience this?

i dont think ive installed anything out of the ordinary here to cause this.

not major problem, it has only happened maybe 3/4 times in past month, but interested in an answere all the same.