BM, i am getting a flashing action where the windows borders go from active to inactive and then back again to active (on my setup that means blue to black to blue). this transpires every few minutes and it is occurring on all open windows ; firefox, explorer, ie, word etc. For the moment that it happens there is also a suspension of keyboard activity as the active window loses focus and then returns... I am wondering if this could be caused by the aeroglass applet and, if so, what could be done to silence this activity. many thanks, eric