Hi Lawrence,
Thanks for your answer.
I should say this thread with the issue synch. error "outofmemoryexeption" is resolved after reducing the approvals on upstream server according to your recommendation.
I am still fighting wiht my next problem deleting the four computer groups on all 20 replica server.
I could till now delete successfully these on half of the replica servers with costing too much time. The way only to unapprove the updates out of these groups could not help me, I have to decline the updates causing these problem one by one according to the logfile. And this is a big job.
I had to rebuild the replica WSUS by some of them too.
I have now a third problem, which I will create a new thread for that.
Thanks a lot.
kailar