Bottom & Left Edge pixels flickering

Hello All,
I've done some searching and I cannot find anything about this. Maybe because I don't even know the search term?

I've been running XBMC on my macmini lion for a while now. I've been using I have a recent nightly (2012-10-15). This issue has only appeared recently. So when playing a video (SD or HD) a row of pixels will be.. wrong. Normally the bottom, sometimes the right edge. I've tried changing video calibration, I am at -4,-8 already and the line is still there. When on the menu everything is normal, it is only while playing video.
Here is a picture with 0,0 calibration.
Any ideas?

new Info:
This is a 2.35:1 movie. It's on the bottom on the video, not near the edge of the screen