I'm using Firefox and when I right-click, the pop-up menu does not finish loading and I can go through any of my other open Firefox tabs. It happens in these forums that I know of:

http://www.webhostingtalk.com/showcases/
http://www.webhostingtalk.com/forumdisplay.php?f=1

Not for me with IE 7.

Yes, problem occurs with Firefox 2.0.0.11 with

http://www.webhostingtalk.com/showcases/

It took me awhile to get control of my system, so I don't want to try the other link.

I did open the upper right advertisement.

Not for me firefox 2