I've scanned all the threads and followed the advice. My touch used to sync with ical before I switched to a new MBP w/Leopard. Now I add an event to the touch and it won't sync to ical. Add an event in ical and it shows up on the touch. So far I've: 1) reinstalled the touch fix app 2) uploaded the N45AP.plist 3) over wrote all cal events from the MBP and sync'd 4) deleted and reinstalled the common sources Still no joy. I'm reluctant to do a restore on the touch so I'm checking here to see if there is any option I haven't tried yet. Thx UPDATE: A friend directed me to here: http://discussions.apple.com/thread.jspa?messageID=5989327� I followed the directions to clear the sync caches and it solved my problem - hope this helps others with sync probs with leopard.