Strange but I have never seen that effect before.
I have seen the post preview when I hover the mouse over it, but never seen how the box moves as a I move my mouse. And now I see the box extends off the edges of the screen right or left.
EH this Hardware thread; http://forums.cnet.com/desktops-forum/?tag=contentMain;contentBody
Post title "PC overheating and freezing during games". For information, this thread;
but it is the forum listing where the black box preview is.
When I hover my mouse of that thread in the listing, it displays to the left and half off screen.
I don't have a wide screen monitor but my resolution is 1280 x 1024 so I should be able to see it all.
Reporting this Bob, and thanks.
If I go to a forum such as "hardware" I see a list of threads.
If I hover my mouse over a thread I get a preview of the thread.
The preview now shows as a rather large black box with white lettering.
The black box will shift on the screen depending on where I position the mouse pointer on the thread title.....sometimes semi off the screen.
This happens with FF or IE.
No I don't know when this started....it could have been here for days/wks and I just woke up to "something is different".