we now know that it is NOT BackupExec related,
as stated, after last reboot, we could "catch" the memory loss in time
by killing all java app's and still be up'n'running.

I restarted all apps, ( zenstuff..) but choose NOT to use the
BackupExec java thread for the client/admin browser. So,, that's not
even loaded and we still se fast decline in usable memory and jsock6x
that's growing fast...

server01a:java -show

Classname ID
================================================== ==========
com.novell.application.zenworks.autowsmanagement.w simport.Im 640
com.novell.application.zenworks.autowsmanagement.w sremoval.R 730

And,, that's ALL java loaded..