The first one created does not shown in the above news group. So I resend
it again.

Hope this message is not duplicating and infringe the rule.

Due to VPN communication problem between servers in two sites, servers in
both sides built up backlink entries and these servers associated in
replicas high in the tree have been out of syn for 3 months.

To my understanding, running DSREPAIR -A will normally clear up the
out-dated backlink entries and thus help speed up the servers

But two months after the problem pesists, the replicas in the upper tree
still show a sync date back to Feb 08.

Any thing I miss out? How can backlink entries be fixed.