[LUG] Ubuntu 13.04 Nvidia screen tearing

[bad apple <mr.meowski@xxxxxxxx>]

Whilst we're talking about new OS versions, has anyone else experienced 
this (google has at least a few other people who do)?

I'm getting massive tearing in video playback, scrolling through firefox 
pages, even workspace transitions in gnome-shell. Every previous Ubuntu 
version including 12.10 on the same hardware has been absolutely fine: 
actually, Win7/8, Debian 6/7/8 and OS X 10.7/8 on exactly the same 
hardware on the same hardware have all been fine, this is the first time 
I've ever seen it. Needless to say it's very annoying and a complete 
game-stopper unless it's very easy to fix (and it doesn't seem to be so 
far).

I've tried numerous different nvidia driver revisions, a couple of 
different kernels and some advanced tweaking of OpenGL, vsync and other 
settings to no avail.

Anyone else getting this?

Clarification:

i5 w/16Gb RAM & Nvidia 8800 GTX
Ubuntu 13.04 amd64

Cheers

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