Last month, I made a year long "on call" schedule using Outlook.  Each day
there are a series of "appointments" that I set up, such as "Doctor A on
call".  "Doctor B Off".  "Doctor C On Vacation".   Worked great, as I liked
the ability to drag and drop appointments as I created the schedule, much
easier than by hand.

Today, I went to make a couple of revisions, and I noted that all of the
appointments in the month of March had been changed.  Each individually was
now spanning 2 days.  For example, March 10 appointment for "Doctor C On
Call" was now spanning March 10-11.  When looking at the appointment in
detail, the date of the appointment had changed to include both days;  the
time said 1 am to 1 am;  and all day event remained checked.  Very bizarre,
and very much a pain as I had to manually go into each appointment and change
them back to include only the one day, with appropriate midnignt to midnight
time.

Very scary, all that hard work and somehow the computer changed dozens of
appointments.

Between the time I set up the schedule and now, I did convert from the Trial
version to the full version by activating with a product key (purchased from
a store), but I have no idea if this is when the bug occurred.

Any ideas?  Is the software this unstable?

Joe