I have a jailbroken 3gs with no issues for months. All of a sudden after being on for a few minutes or a few hours, it starts to behave very erratically. Screen gestures invoke the wrong commands, button touches activate something on another area of the screen, etc. I often can't even shut it down to reboot because the swipe for "off" slider won't take the gesture. Has anyone else had this kind of experience? I'm going to restore and re-jb this weekend to see if that helps, and I'll only reinstall those apps/themes that I actually use. Thanks!