I just noticed recently that anything I add to my Blackberry calendar isn't syncing with my outlook calendar yet, when i add to my outlook calendar it syncs with my BB calendar. No error messages, no conflicts show up at all everything just looks like it's working fine. Also, I sync with the USB cord and i use BDM v4.7 on Windows Vista home premium and my sync options are set for two way sync.... and everything else seems to sync two way except my calendar.
i should also mention that i am not using any sort of Exchange server/BES or whatnot. Im just a home/personal user.