[ubuntu] video issue, trailing windows, black border

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http://ubuntuforums.org – I have a T61 with Nvidia video card, I've tried turning off the device driver and also turned off desktop effects but I keep getting trailing windows when i drag them and a black border that follows the window when i minimize or maximize. I also get a nasty black background on cario dock too? What might be my issue so I can begin researching a fix, I've been searching but its possible im searching for the wrong terms in google? (Hardware)