Mouse Quits After Upgrade of Mac OS X in VirtualBox

If you run into a problem with the Mouse no longer responding in VirtualBox after upgrading to the latest Mac OS X - read this article.

Here is an easier solution which doesn't involve changing any files:

1. On the Virtual Box host window, choose the Machine menu item.
2. Choose "Disable Mouse Integration".

Now to get out hold down the right CTRL button and move your mouse outside of the Virtual Box window.