It's libxrandr2 preventing windows update. Noticed this already some time ago on two different machines having different Nvidia cards, when .I pulled something from unstable that upgraded this package. Today I got again this effect when updating testing on yet another machine but having a Nvidia card. All cases with compiz/testing and nvidia-glx/unstable.
Regards, Koos Vriezen -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]