possible problems with xml export

[richlv]

i'm seeing some weird issues that i'm unsure about, so let's see who has a better idea
if the issues can't be resolved/explained here, i'll properly file each as a bugreport.

1. both trunk & 1.6 branch, revision 6913

exporting item with key system.cpu.load adds the following value for this item :

<params>DSN=&lt;database source name&gt;\nuser=&lt;user name&gt;\npassword=&lt;password&gt;\nsql=&lt;query &gt;</params>

that looks... a bit wrong. is this string supposed to go there ?

2. for item with key system.cpu.load and item type zabbix agent the following values are also exported, which seem to be both useless and increasing export size :

<trapper_hosts></trapper_hosts>
<snmp_community>public</snmp_community>
<snmp_oid>interfaces.ifTable.ifEntry.ifInOctets. 1</snmp_oid>
<snmp_port>161</snmp_port>
<snmpv3_securityname></snmpv3_securityname>
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authpassphrase></snmpv3_authpassphrase>
<snmpv3_privpassphrase></snmpv3_privpassphrase>

i also have doubts about exporting of these values :
<lastlogsize>0</lastlogsize>
<logtimefmt></logtimefmt>

3. trunk also exports value <data_type>0</data_type> (for the same item).
how does this correlate with values in <item type="0" key="system.cpu.load" value_type="0"> ? isn't there some redundancy or something ?