>This morning when I came in and checked the status of last nights backups
>in the administrative client, instead of saying completed or failed etc.
>they all said uncertain under the status field.

From my notes:
Query EVent notes                       A status of "uncertain" usually
means
                                        that the schedule event record has
been
                                        deleted by automatic pruning
functions:
                                        it is no longer in the database.
                                        You could change the amount of time
that
                                        schedule event records are retained
                                        using the SET EVENTRETENTION
command to
                                        keep these records around longer so
that
                                        you can query their status.
                                        Query Event shows only the latest
status
                                        for each event.  If a scheduled
                                        operation is executed successfully,
                                        the status will indicate that the
                                        event was successful, although
previous
                                        attempts at this event may have
been
                                        unsuccessful.