Random black squares overlayed when using Facebook & other websites

Same size ,black boxes show up in random positions. They have no content that I can see & no outline They seem to continue to pop up every second or so until I leave a page I did update Flash - related to the problem? Seems to be related to only some webpages - not happening here as an example

Check your display driver. May want to update/reinstall.

Happen with all browsers ?

Turn off Hardware Acceleration, and see if that works. I've seen several posts in the last couple of weeks regarding things like this, and it turns out HA is to blame.

Davee3 said:

Same size ,black boxes show up in random positions. They have no content that I can see & no outline They seem to continue to pop up every second or so until I leave a page I did update Flash - related to the problem? Seems to be related to only some webpages - not happening here as an example

Messed around a bit - happening with all browsers - drivers were up to date - hardware acceleration ??
Somehow the problem is gone Wish I knew what