Appointments not visible

[TZ]

In Outlook XP calender when I create an appointment the
appointment details are not visible after saving. The
date is bolded and if I try to put in an appointment in
the same time slot it says that this conflicts with an
existing appointment. Any ideas?

 

[TZ]

P.S. to below - I tred opening with clean views command
line switch to no avail. Appointments that were set up in
the past work normally displaying and generating
reminders. It's just new appointments.