Something is shifting (stealing) focus from my active window (active program) in my Windows, as I'm currently using it.
I have the same problem as described in this question, with a few exceptions:
I observed this behavior on (at least) two different computers, so this is not a machine-specific.
One of mentioned computers has Windows 7 HE 64-bit another has Windows 7 Pro 32-bit, so this problem is not specific to a particular version of Windows or to a particular hardware platform.
Sometimes focus is lost for good (have to click on window to continue using it), sometimes it is just shifted to some another background process (?) and returns after about 2-3 seconds.
I haven't been installing anything new on any of these computers for past few weeks (except for Windows Update and other automated updades like Chrome browser auto-update) and certainly mentioned probles started to happen many days after last install.
Current behavior of my computer is really weird and the entire thing become annoying. Examples:
I'm selecting some text in Chrome and actually see, that selection color changes from blue (selection in an active windows) to gray (selection in inactive window).
I'm editing some document in Word, Notepad++ or an e-mail in Gmail in Chrome and edit process either stops for a few seconds (when focus shifts) for is ended permanently (focus lost for good).
I have active, updated and working Microsoft Security Essentials and it does not report anything unusual.
I had a feeling, that it most often occurs in Google Chrome. At first I was so sure, that I was nearly ready to accuse some of last updates of this browser. But it turned out, that I noticed this unusually often in Chrome, because this is my most often used program.
Does anyone have or had similar problems or have any idea, what can be causing this or how to fix this?