i got the same problem. i have a torch 9800 and an imac running snow leopard. i wanted to sync my ical and address book to my 9800. i would also like to mention that i have mobileme enabled so that's how i have my ical and addressbook synced wirelessly to my iphone and ipad. i downloaded the DM for mac the other day (directly from their website, not sure which version that is though) and when i synced (chose the two way option), all my entries on my ical was wiped out and transferred to my device. needless to say, mobileme, iphone, and ipad calendars also was wiped out!! good thing i had back up of my ical file so i just uploaded that. but now, i'm afraid to do it again because i don't know if that's going to happen again.
also, during that sync process, i got the error kb14954 and my address book won't sync. help!