randomly ive been getting this problem with my n900 where when i hit the switch or activate the screen or slide it open the display will light up for maybe a second and then blank out again. it will then generally not respond to my attempts to get the display to come on again. if it does come on it will only come on for a second before blanking out again. it also appears that the touchscreen is still active when the display blanks out because it would seem that i hit something while the display was off because when it flashes back on something has changed. i usually have to reboot for it to solve itself. it has so far happened twice and both times it took two reboots to solve the problem. i havent installed or done anything new or different to the device lately. any ideas?