Does anyone else's phone just go black (not off, just black screen) while browsing? Late at night ill be using my EVO browsing the App store. Ill download 2-4 apps and play around with them, keep what I like and uninstall what I dont. Ill read the news, use friend stream and read reddit. I am using wifi, no task killers, froyo, (problem existed with 2.1 as well), but for whatever reason my screen goes black. The phone is not off, the 4 buttons at the bottom are lit up. Pressing the power button brings the screen back on but sometimes it just dies out to a black screen again. I've done a soft and hard reset both to no avail. Is anyone else having this problem? How many apps can the phone handle at one time?