When I am watching videos with mmplayer of kinoma ex, I can see horizontal lines (sometime part of the video) flicker. I had this same problem with Doom 3 on my pc, but I corrected it by syncing the video with the screens refresh rate. I think my LCD screen can't keep up with the video. It acts weird with NesEm too. I do have a refurbished unit. I never noticed this problem with my first 650. Does anyone have this problem? I have the same video's I watched on my old treo 650 too. If someone could provide me with a sample video that runs perfect on your 650. If mine does have a problem, what should I tell the sprint store to get it fixed since its 3rd party software?