I have had this evo for just a few days now. For the first 2 days (with the screen time out set to 30 seconds) the screen would dim at like 25 seconds... and then turn off completely. Thus locking the screen. That seemed normal and I liked that. Now, however, the screen dims at 25 seconds still... but it never shuts off completely. It just stays dim. I realized this because last night I put the phone into clock mode (the same way I did the first 2 nights with no problem) except last night the screen stayed on and this morning my battery was half drained from an almost full charge. If I press the button on the top, it does shut off completely, but I would love to have it back to the way it was before. Thanks for the help.