[lubuntu] Flash Display Problem

view story

http://ubuntuforums.org – I have two Windows open in the browser, a Youtube video playing on one, displaying any image on the second and the video from the flash video partly breaks through, this seems to relate to the cause, what's the fix? The video even stays on screen when the screensaver kicks in ... -- Lubuntu 12.04 Nvidia GeForce 210 (Hardware)