mbrs=tmp_view.getMembers();
members.clear();
members.addAll(mbrs);
adjustReceivers(true);
is_server=true;  // check vids from now on
<BUG>Set tmp=new LinkedHashSet(members);
</BUG>
tmp.add(null); // for null destination (= mcast)
sent.keySet().retainAll(tmp);
received.keySet().retainAll(tmp);

mbrs=tmp_view.getMembers();
members.clear();
members.addAll(mbrs);
adjustReceivers(true);
is_server=true;  // check vids from now on
Set<Address> tmp=new LinkedHashSet<Address>(members);
tmp.add(null); // for null destination (= mcast)
sent.keySet().retainAll(tmp);
received.keySet().retainAll(tmp);
