Have win2k SP4 exchange 2k enterprise SP3, when in calendar users go to create an appointment and check attendee availability, SOME users after checking & underlining their name, have their calendar showing as no information i.e. lines all through it, instead of having blue blocks showing booking already existing in that calendar. It is hard to tell why some a visible and others are not.
I've put a picture showing this at http://www.kingcomputer.com.au/calendar.jpg
My guess is it is a scheduling/updating problem. I've been having a run of weird problems with the exchange server at this site with IIS spontaneously shutting down, and am looking at whether a virus on the network is causing some problems to the server, which certainly is fully patched and virus protected, and does not appear to be infected in any way, but may be getting bombared internally (firewall protects from inet)