Something has happened today, when I try to log in to my browser, BT Yahoo the @ symbol will not appear, instead I get a capital A with a dot each side at the top of the letter which I presume is another language letter. The strange thing is that typing it anywhere else it works perfectly, it only happens in the login box of my browser, then obviously it won't let me log on.

I log in, in lower case but the capital A (with dots) still appears where the @ symbol should be.

Can anyone please help.

John