I have a NW6.5 SP5 server. Server runs with 100% processor utilisation.
Profile debug shows me MM.NLM running with over 90%.

Execution Profile Data by NLM
NLM Name NLM Description Execution Time Processor 0
MM.NLM NetWare 6.5 Media Manager 93.1 % 100.0 %
SERVER.NLM NetWare Server Operating System 3.7 % 100.0 %

Backup is running, but does not finish. We are using Syncsort Backup
Express 2.35.2. MM.NLM is Version Hardware is Dell PowerEdge 1800
with PV110T 80/160 GB DLT VS160.

Server is still available, even no significant performance problems for
users. Server is used as file server.
Server runs without problems before, noc changes last time!

What is the problem?