lol Nevermind its working , if i typed ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff it would not work but everything is ok if i add a space .
I think setting the word-wrap property to break-word will protect against the problem. I did that in Firefox and the issue went away. I would imagine it would work the same in IE, though I haven't tested it. Granted, it is a bit of an edge case, but it's also a trivial fix.