Symptoms
When scheduling a meeting in Outlook the free/busy information for a delegate is displayed but the data is not correct and does not match the delegates calendar view.
Cause
This may be due to Outlook displaying cached information
Resolution
Close Outlook. Click Start, Run and type
Outlook.exe /cleanfreebusy
Outlook will start up and when sceduling a meeting will display new data returned by the WorkgroupShare free/busy server.
More Info
Note that private appointments will appear as busy periods on the free/busy display but these will not be visible on the shared view of this delegates calendar.