Is there anything on your keyboard holding down the space key by chance when
this happens?

On one of my keyboards the space key is somewhat oddly placed so when I rest
my wrists I have issues with them sometimes holding it down.

"Paul M" <paul@nospamcoldnfrosty.com> wrote in message
news:E3D04F2A-B486-4168-A2B1-60E1E763EF86@microsoft.com...[color=blue]
> Active windows on my desktop pulsating between active and active very two
> seconds. Likewise popup menus, making it impossible to select menu
> items.Any clues what I should look for?[/color]