I contacted Nvidia with the exact same information and ansver was: "problem in the X server itself. ". See below:
-------- Original Message -------- Subject: Re: xserver-xorg: 7.5+2 => 7.5+3 upgrade causes xinerama grave functionality and segfault trying to move window between screens Date: Sun, 7 Feb 2010 12:04:15 -0800 From: Aaron Plattner <aplatt...@nvidia.com> Reply-To: linux-bugs <linux-b...@nvidia.com> To: juhani.karls...@iki.fi <juhani.karls...@iki.fi> CC: linux-bugs <linux-b...@nvidia.com> References: <4b6eb533.8050...@lrdlnx.iki.fi> Dear Juhani, Since the problem did not occur with the older X server and does with the newer X server, even though the NVIDIA driver is the same, that indicates that the problem is caused by a bug in the X server. In addition, the backtrace you attached doesn't point to a problem in the NVIDIA driver, but rather a problem in the X server itself. I would suggest contacting the Debian support community for help. -- Aaron