Netware 6.5 SP2
Arcserve 11.1r sp2

We are having system hangs around backups. CA has suggest updating SMDR
and TSA's which it uses to access the file system. The backup start and
format the tape and then at the point it goes to access the tsa the system
will hang. Instead update the modules suggested by CA we were going to
apply service pack 6 which should update everything. Is service pack 6 a
stable SP or should I be looking at an older SP?