happens to me 1-3 times a day. mostly when i'm writting a lot. now that i'm using swype (not sure i like it yet, but everyone should try it!) i can see that i

happens to me 1-3 times a day. mostly when i'm writting a lot. now that i'm using swype (not sure i like it yet, but everyone should try it!) i can see that it sometimes draw a line caming from the bottom of the screen, right above the menu button.