This morning, when I turned on my home PC, it acted very strangely.
The display was very slow in responding. For example, whatever program I had up, when I closed any window of that program, a ghost image would appear and striated lines, of that window. It would stay there for a while, and then finally go away.
Also, the mouse would be significantly delayed in moving around Windows and typing anything would be seriously delayed. I have no idea what's going on, or why. This sort of behavior on that PC is very odd, as it's a relatively new PC (about 2 years old). It's an HP Pavilion Elite, quad-core processor.
It has been a solid machine for me, so this behavior is really out of the ordinary. The only thing new, is I installed Intuit's Quicken 2012 yesterday.