mobile me calender syncing from tiger

hi,
i've been trying to sync my calender with mobile me, but with no success.
i get the green tick in the sync window to indicate everything is ok, but the mobile me calender just appears blank.
i've successfully synced my address book though.
is it something i'm doing wrong?
thanks
mike..

I have the same problem using Leopard. All has synced properly, but when I try to look at my calendar via the web, just get the spinning pinwheel. Syncs fine to my iPod touch, though. Just can't access via the web. Anybody help?