When I open the Firefox System Preferences window, the screen below the menu area is blank, no matter which menu item I select.
Also, when I'm in a Firefox browser window, and have more than one tab open, I can click on each tab and the little icon flickers, which tells me that I've connected to it, but the window that I'm looking at stays on the original tab window. Currently, I have 3 tabs open and am writing in tab 1. I can go to tab 2 or 3 and grab it and move it to another position, or click on the (x) to close it, or refresh it, but I can't see the window. The only window I can see is the one from Tab 1. This just started yesterday.
I'm on a 15" MacBook Pro from 2006, running OS 10.4.11