I installed flash and reinstalled Midori using the package manager, then when nothing seemed to change, I tried to restart. Unfortunately, while I could click all of the applications and shortcuts on the screen, none of them did anything. I eventually restarted the laptop by removing the power. When it came back on, I got through the login screen fine, only to be greeted by a completely black screen with just my mouse cursor on it.
I can right click on the screen and it shows the normal right-click menu for the desktop but none of the links work except terminal (under 'Favourite applications'). Also, 'Activate Composite' turns the screen grey.