[help] One Pixel Line On Left Edge Of Screen

Object Dock seems to be creating a one pixel line the height of the dock on the left edge of my screen with a white background you can't tell but with a black background you can I was wondering if anyone knows how to get rid of it. Its not a seperator. heres a pic you can't really see the line in it cause paint cut it off I think.

#149355

THis happens form time to time usually when changing background restarting Mobydock always fixes this for me.

#149362