[KBZL]

TBH, I know majority of those and used them myself. There are a few I dont know so I dont know if they are the culprit or not. These are the ones I dont know, you could try uninstalling them and see what happens. If everything goes fine for a day or so, add them on 2 at a time until it happens again. Should help narrow it down.

Star wars light saber (just fun)
Compass
Syncmypix
Epocrates
Wikidroid
Flashlight
Advanced task killer
ALoqa
Place directory

Do me a favor before uninstalling all of those, just uninstall the advanced task killer and then see what happens. Android OS has its own built in task manager so a task killer isnt necessary and in some cases can close programs that are essential for some things to work properly.