Using windows XP SP3 fully upto date from Microsoft.
In Internet Explorer I had a tab button ajacent to my open window. This has disappeared and to open a new tab >ctrl+T> opens a new window with the excisting page deleted. I would be gratefull if anyone nows how to get it back.
I used to use firefox but it had a glitch that took all my resources on some updates so went to IE8 which I have found to be very good untill now.