Screen on and off =(

[Garett1]

I have my Xperia Ray updated to 4.1.B.0.431 just after i bought it, it was working fine at first. However, not knowing when did the problem start, the screen ocasionally turns on and off automatically as if i press the power button. The screen turns on and off for exactly 5 times everytime and this repeats for like every 10mins. The problem will solve if i restart my phone but the problem comes again whenever it likes. Could this related to any apps(task killer, etc...) i have installed ? Or some bugs or something in the system ? This could seriously drain my battery flat if the problem left not noticed. Anyone has this problem too ? Need help from you guys out there, thanks in advance. 

[Veresova]

It can make an application. Use the application to detect Air push detector.

It detects such applications.

[Jake-SonyXperia]

Yes some applications can make the screen turn on, I would definitely suggest checking applications such as Taskiller. Go through the settings of any apps you have downloaded and see if there is an option related to the screen sleep policies and timeouts.