not responding

Hello All,

ICal is not responding, even after resetting sync data and moving com.apple.iCal.plist to the desktop prior to restarting. Please help! I need the calender/sync for my work phone. Just prior sync made lots of errors with my phone and deleted entries or formed duplicates.

OS 10.4.11

iCal 2.0.5

(I cannot afford to upgrade to Tiger/Lion since I also use specialized scientific and math software on Tiger)

Cheers,

-A