According to https://bugzilla.gnome.org/show_bug.cgi?id=597094, a fix was committed to GIMP's trunk branch today. That should solve the problem.
I don't understand why this bug report has anything to do with Unity or Compiz. May you please explain? ** Summary changed: - GIMP-Unity-Integration needs to be improved + GIMP does not restore maximized state when reopened ** Bug watch added: GNOME Bug Tracker #597094 https://bugzilla.gnome.org/show_bug.cgi?id=597094 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gimp in Ubuntu. https://bugs.launchpad.net/bugs/1065578 Title: GIMP does not restore maximized state when reopened Status in The GNU Image Manipulation Program (GIMP): Unknown Status in “compiz” package in Ubuntu: Confirmed Status in “gimp” package in Ubuntu: Confirmed Status in “unity” package in Ubuntu: Confirmed Bug description: Unlike other applications GIMP don't open maximised if it is closed maximised. This happens in the one-window-mode. When reopened after being closed maximised, the program window is too large for the screen space available and extends below the bottom edge of the screen. This was confirmed at least for GIMP. This happens at least for me with a monitor resolution of 1366 x 768. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: gimp 2.8.2-1ubuntu1 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 ApportVersion: 2.6.1-0ubuntu3 Architecture: amd64 Date: Thu Oct 11 18:30:20 2012 InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20121011) SourcePackage: gimp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/gimp/+bug/1065578/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp