The backup issues were partially resolved by re-installing the ingres database, but we are still having problems. For instance, now the backups of a Windows 2000 server work correctly, which is good, but I cannot restore them, which is bad. I re-ordered all of the backup jobs to better use the drives and time available, and staggered the start times to avoid hardware locking problems. I even made a very nice Excel sheet showing which jobs happen at what time and on what tape drive - thus we can see where the conflicts were (now resolved!).