The original post centered around IE and Entourage unexpectedly quitting on a Tibook running 10.1.5 --- Thanks to all who responded ... we ditched some M'soft prefs file in the user library ... didn't have any effect. My friend took upon himself to call M'soft (I don't think he had ever used any of his support contacts before) and got through to support after about 1/2 hour. They had him ditch some additional items (I've yet to get out of him exactly what they had him delete), but it has solved his problems. Many thanks to all for your suggestions ... I hope to have myself and him updated to Panther 10.3.1 within a couple of weeks. Regards, B. Forbes