After an upgrade from 4.5.9 to 5.0 NE last night, we're having the following problems:

Schedule view on the calendar doesn't work. It jams all of the events from all of the open calendars into one pane. Other views seem to be ok.

When viewing an appointment to see who has accepted or to see the details, the calendar locks up. Only by going into a different calendar view can you close the window.

Instant Messaging doesn't seem to be working at all. We can't add buddy's, send messages, nothing.

Can someone please provide some help, or should I open support tickets for these?