So, I just got off the phone with apple tech support. And they told me to do an archive install. iChat, Calculator and Activity Monitor all stopped working compltetly and abruptly so the solution was an archive install of tiger. When I loaded panther i did a clean install. then when i loaded tiger i did an archive install. so im thinking maybe it would be better to go ahead and do a clean install. i have a full backup of all my files on an external HD so im not worried about losing anything. Im an old windows user and whenever I had a problem there I would do a clean install (which was somewhat frequent). Any thoughts?