Screen letters going wack with Invalid pointer afterwards.

This may sound...REALLY strange but in all in all im being serious at the moment. Just this moment i was semi-afk and suddenly my IGN/Class on the bottom left started to freak out :f6: it kept going: >?<?>?<???, blank and back to it again. And when i tried to type it would change the letters to, "iconraw'' and then it kicked me out with a invalid pointer error...



Wish i wouldve caught the '>?><<???' thing happening.