mouse attention problem

I have a problem with the focus of my mouse. Intermittently (maybe 10% of the time), the mouse focus fails to change to the new window I'm pointing at. So, I aim at a new window, but my keystrokes come up in the last window I was typing in. Sometimes it even seems like I'm trying to type on th

mouse attention problem

I have a problem with the focus of my mouse. Intermittently (maybe 10% of the time), the mouse focus fails to change to the new window I'm pointing at. So, I aim at a new window, but my keystrokes come up in the last window I was typing in. Sometimes it even seems like I'm trying to type on t