Items from Exchange calendar do not appear in print

Hi,

I've subscribed to an Outlook calendar which lives on an Exchange server. Within iCal (Calendar) this calendar appears in the Exchange group and its items display fine. However, when I print next week's schedule, the Exchange items are not included in the printed page. Furthermore, in the printing dialog, the Exchange group is visible but the calendar is not (and yes, I toggled the visibility switch).

Any help is greatly appreciated.

Klaus