Ever launch an application, game or whatever....and the resulting application is all transparent and almost un-viewable. Well, it's more than likely just having a problem with compiz, Xgl, or whatever. Try this command in your launcher script before launching the app, and things should look as expected:
If the above fixed your application, it's probably a compiz transparency issue with the application. To make a "permanent" fix, do the fllowing:
1. Open up ccsm (if you don't have it install it using "sudo apt-get install compizconfig-settings-manager")
2. Go to "Window Rules" (and make sure it's enabled)
3. In the "No ARGB Visuals" box put the following without quotes "class=VirtualBox"
4. Hit back, close ccsm, and open up VirtualBox.
For my VirtualBox images, this solution still applies, with just a minor alteration.
1.) Create a file called ~/bin/VirtualBoxWinXP.sh (or whatever)
2.) Place this in the file:
VBoxManage startvm "WinXP"
3.) Right-click the file, go to Permissions and make the file Executable
4.) Create a launcher to point to this file
VBox images now launch correctly.