I'm currently having difficulty with a graphical glitch in Emacs 24.4.1. Occasionally all the text in my current frame will tear, and I'll have to force Windows to redraw everything by covering up the Emacs frame with another window. This doesn't seem to happen with any consistency, and only occurs with Emacs. I'm not entirely sure how to reliably reproduce the error, rather it just happens randomly whenever I'm working in it. Any help would be greatly appreciated, and an example picture is attached below.