Update: The problem seems to have disappeared. When I booted into safe mode to run the scan, I also scanned and fixed my registry with CCleaner and I haven't seen the problem since.
Yesterday, I noticed my taskbar acting strange. I was using Firefox at the time, and my taskbar would just start blinking rapidly. Right now as I type, my screen is blinking, my taskbar is flickering rapidly, and the icons on my taskbar are enlarging quickly. This happens when I am not in...