Hej NG

I have Backup Exec 8.5 running on a netware server for about 2 years now.
Suddenly nearly every night the backup fails with the following error i log
"File XXX is corrupt on tape".
This happens on several files (between 1 to 10) and its not always the same
files. I have tryed to use new tapes and a new cleaning tape on the drive
without any change. My system is Netware 5.1 SP3 with BackupExec v. 8.5
build 4111. Im using a HP 20-40 DAT drive.

Does any have suggestions to what the problem might be?

Kind regards
Robert Vilhelmsen