Render Result Issues

When I upgraded to 2.68, the render result started tiling a certain section of the finished render.

it looks like this


but when the image is saved saved and viewed outside of blender, it is correct.


I think this may have something to do with my OS, as when I upgraded blender, I had to manually upgrade all of blender’s dependancies.
My OS is 64-bit Arch linux, completly up to date.

Any help with this would be much appreciated .

Okay, I’ve fixed the problem. I changed the window draw method to triple buffer. Just thought I’d post in case comes across this thread.