Some servers are monitored only when monitoring is done through Master not proxies, it seems proxies do not have the right configuration. Below is the proxy log in debug 4:
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16493:20120118:214252.927 [Z3005] query failed: [0] PGRES_FATAL_ERROR:ERROR: duplicate key value violates unique constraint "hosts_templates_1"
[update hosts_templates set hostid=10127,templateid=10122 where hosttemplateid=80;
update hosts_templates set hostid=10101,templateid=10123 where hosttemplateid=81;
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insert into hosts_templates (hosttemplateid,hostid,templateid) values (961,11005,10120);
insert into hosts_templates (hosttemplateid,hostid,templateid) values (967,11011,10122);
16493:20120118:214252.928 failed to update local proxy cofiguration copy
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