Gnome stealing focus, only able to navigate with tab and enter
I recently installed Ubuntu on my 4-year old HP pavilion. It previously had windows XP installed, but during the iinstallation, I had it completely wipe the hard drive. Everything boots up fine.
My problem is with (I'm pretty sure) Gnome. At random times, it will not not let me change the focus from one window to another, or from one widget to another, or from one button to another, etc. For example, in the GIMP, I would select the paintbrush then try to switch over to the image, but it would not let me. The focus continually stays on the paintbrush button.
I have been able to temporarily fix this (sort of) by hitting Ctrl+Alt+F[1, 2, 3, 4, 5, or 6] then Ctrl+Alt+F7. This will sometimes free up the focus and let me select something else, but whenever I need to switch to another widget, I have to pull off that same hack.
The strange thing is, this only starts happening a day or two after installing Ubuntu. About a day after this started happening, I got fed up and completely reinstalled Ubuntu. But now it started again.
Does someone know anything about this? I previously suspected that the option
"System>Preferences>Windows>Select windows when the mouse moves over them"=true
caused this, because I had changed that to true with my first install, but I have it as false now, and it still freaks out.
Also, rebooting and logging out sometimes help with this. I have no idea why. Is it because of some component of Gnome that times out or something?
I'm sorry if this is a little long, I'm trying to give as much detail as possible.