Black boxes are drawn around various windows on the screen

[steveb]

Black rectangles appear where graphic items like buttons or the like would be expected. This seems to affect a lot of applications. I have also seen it when hovering over a tab in Firefox and Google Chrome.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gnome-terminal 3.6.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10
Uname: Linux 3.13.0-40-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: i386
CurrentDesktop: Unity
Date: Mon Dec 8 22:35:43 2014
ExecutablePath: /usr/bin/gnome-terminal
InstallationDate: Installed on 2011-02-14 (1393 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 LANGUAGE=en_GB
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-terminal
UpgradeStatus: Upgraded to trusty on 2014-05-10 (212 days ago)