autodiscovery with 1.6.4 on linux failing

[zac]

agent and server are new 1.6.4 install on CentOS 5.2.



agent is adml-m01 ; server is zabbix-server

server reports
22619:20090604:112952 Trapper got [{
"request":"active checks",
"host":"adml-m01.mydomain.com"}] len 72
22619:20090604:112952 In send_list_of_active_checks_json()
22619:20090604:112952 In get_hostid_by_host(host:'adml-m01.mydomain.com')
22619:20090604:112952 Query [select hostid from hosts where host='adml-m01.mydomain.com' and hostid between 000000000000000 and 099999999999999]
22619:20090604:112952 In get_ip_by_socket()
22619:20090604:112952 Send list of active checks to [192.168.20.126] failed: host [adml-m01.mydomain.com] not found
22619:20090604:112952 Sending [{
"response":"failed",
"info":"host [adml-m01.mydomain.com] not found"}]



agent reports
18287:20090604:120159 refresh_active_checks('192.168.20.70',10051)
18287:20090604:120159 Sending [{
"request":"active checks",
"host":"adml-m01.mydomain.com"}]
18287:20090604:120159 Before read
18287:20090604:120159 Got [{
"response":"failed",
"info":"host [adml-m01.mydomain.com] not found"}]
18287:20090604:120159 In parse_list_of_checks() [{
"response":"failed",
"info":"host [adml-m01.mydomain.com] not found"}]
18287:20090604:120159 In disable_all_metrics()
18287:20090604:120159 No active checks on server: host [adml-m01.mydomain.com] not found

DNS on both ends is sound and names do resolv. hosts are on the same subnet.

any ideas? thanks
-zac