Okay, so I ran an upgrade through the Software Updater in Ubuntu 12.10, and then restarted my computer. Upon restarting I noticed that all of the icons in the transparent login screen bar were white blocks, and then after I logged in, I noticed it had also happened with context menus, right click menu, and the popup notifications for volume and such. I have screenshots of the issues here
if anybody knows what this error is and how I could solve it, that would be much appreciated.
Thanks in advance!