similar experience with that rectangular space
Wouldn't like to name the bug but it showed up full face on
Firefox and Chrome. Bugged me by blocking use of browser
and on the second day started spouting messages, like,
"your disk is breaking" or something like that.
Like a raging bull in a nice living room.
Had to spend two days recovering my newly bought Notebook,
and above that, it broke down my settings to the internet.
Yes my other 3 year old faithful also was beginning to act
wierdly. Took me a whole day today repairing.
Today it seems CNET downloads seem to be normal,
by no means will I use the "brazen installer".