i think someone else had this problem. i thought it was just on this site, but now it's happening to me on other sites also. type about 90 words and then the text doesn't move down as i type. it just jumps in the same spot and i can't see what i'm typing.
there must be a fix, but i have not found it.
windows vista home premium, IE8.
have not remembered to check on firefox to see if it's happening there too.