I have IE7 on a xp machine. I am experiancing problems when I click on a hyperlink or button that would normally either open a new window within the same tab. It does open it, but also then closes it very rapidly aftwerwards to the point where I can't see what I have clicked. I have turned off pop up blocker and this has not worked.
An exmaple of this in action would be the bbc.co.uk news site and trying to open one of the videos from there. It would open and then shut down, taking me back to the original page.