My wife's laptop had the same problem, found a setting that disabled the touch-pad while typing, that more or less cured the problem. Or alternately, as you're using it with a mouse, turn the touch pad of using the appropriate function key.
As for the phone number problem I've no idea as I've just tried it and it works ok for the sites I tried, post the URL and I'll try it from here. (I almost never use IE )