iCal makes my MacBook fan go wild

I don't always get the whining fan, but once I launch iCal, I can say goodbye to any free system memory. This has been recurring for at least 2 months, and I've been watching Activity Monitor very carefully, and see an absolute connection with iCal and SyncServer. It's very frustrating, 'cause I really want iCal to work, but not at the expense of my (theoretically powerful MacbookPro w/) System memory (2gb).
At the suggestion of my Apple store's "genius," I exported all my calendars, deleted them from iCal, trashed all iCal cache and metadata folders, plists, etc. I then brought in a few calendars one at a time. I purposely avoided any subscribed ones, and let iCal delete alarms. I ran the computer for a few days with only 3 or 4 calendars, and the behavior was a bit better, but still SyncServer was using LOTS of memory.
My console logs are showing lots of lines with "Invalid address property:" warnings (w/ referenced to eddresses that are valid); and "WARNING: BestCalendarDateFromString - can't interpret:"
So, I'm back to wondering: what can I do!?!?!?
(It is slightly comforting to know that someone else is experiencing similar problems. I only hope someone reads this and has a clue as to what's going on and how to solve it.)

Deleting th folder and contents
~/Library/Application Support/SyncServices/local
solved this very issue on a MBP c2d 17'

Patrick