Hello, I have a 10.5.5 Mac OS X Server and the iCal Server is on. I have a problem, that happend twice, so I guess there is something. On time, the CPU was at 100%, taken by the User, but I couldn't see what was wrong in Activity Monitor or top, because the step of measures was to large : I found that there were several small Python processes that were launched and stopped constantly ! I tried to know where they came from. I stopped services one after another, and found out it was iCal : 10% CPU after that. Today, I had the same problem. The only thing I did today with iCal Servr was augmenting a LDAP record in the OpenDirectory. I just chose the calendar to be synced with. Where dos this come from ? Thanks, -- Louis Romero Arcank