I am at 10.4.11 G5 6 meg ram I am online 24/7 (except for reboots). I put on some new fixes for Safari this weekend (no issue so far). Today while I was away ICAL went into a loop. Nothing was going on except for these 2 things. I have a friend who subscribes to .MAC and I have one of his calendars in ICAL and he updated it (which should tell my ICAL to fetch the updated calendar) . The other item was that there was an appointment reminder that occurred at around and I never dismissed it. I didn't know it was looping until 9PM tonight. I had to force quit it. Has anyone else experienced this? Ed