For the past few months, I have not been able to depend on my iCal event alarms. These alarms are supposed to appear daily at different times of day. Sometimes they appear on time, sometimes very late and sometimes not at all. I've been using three kind of alarms - a message, an "open file" and a "run script." The problem has occurred with all three. I am running 10.6.8. Unfortunately, at this point I can't recall anything that might have occurred or I might have done that would have precipitated this problem. Any suggestions?