Zabbix server outputs 'hidden' data that appears to be mysql debug data. Fresh install from a debian package on the squeeze repos. Did not turn debugging on/off [this has to be a default at the moment]

Using a text browser, I see the following, I assume this should be off by default:

Received cookie: zbx_sessionid=e1d8f50389e15d97cc22c1f565d42ece
Received cookie: zbx_sessionid=deleted
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Zabbix 1.8.1 Copyright 2001-2009 by SIA Zabbix | Not connected

• • • • • • • • • • • • • • • • • • • Stats for script *************************
                                      Total time: 0.421011
                                      Memory limit : 128M
                                      Memory usage : 1024K - 7.5M
                                      Memory leak : 6.5M
                                      SQL selects count: 5
                                      SQL executes count: 4
                                      SQL requests count: 9
                                      Time:0.000326 SQL: SET NAMES utf8
                                      Time:0.000142 SQL: SET CHARACTER SET utf8
                                      Time:0.001414 SQL: SELECT * FROM nodes WHERE nodetype=1 ORDER BY nodeid
                                      Time:0.001798 SQL: SELECT u.* FROM users u WHERE u.alias='guest' AND ((u.userid
                                      BETWEEN 000000000000000 AND 099999999999999))
                                      Time:0.007277 SQL: INSERT INTO sessions (sessionid,userid,lastaccess,status)
                                      VALUES ('e1d8f50389e15d97cc22c1f565d42ece',2,1266388377,0)
                                      Time:0.001212 SQL: SELECT MAX(g.gui_access) as gui_access FROM usrgrp g,
                                      users_groups ug WHERE ug.userid=2 AND g.usrgrpid=ug.usrgrpid
                                      Time:0.001003 SQL: SELECT g.usrgrpid FROM usrgrp g, users_groups ug WHERE
                                      ug.userid = 2 AND g.usrgrpid = ug.usrgrpid AND g.users_status = 1 LIMIT 1
                                      OFFSET 0
                                      Time:0.001421 SQL: UPDATE sessions SET status=1 WHERE sessionid=
                                      'e1d8f50389e15d97cc22c1f565d42ece'