a network discovery -> an action with linking a template with LLD to a host -> in the the host, the "lifetime" of the discovery rule is 30 (default of DB schema) instead a value from template (not 30).

Debuglog:
20122:20120625:023054.617 query [txnlev:1] [insert into items (itemid,name,key_,hostid,type,value_type,data_type,delay,delay_flex,history,trends,status,trapper_hosts,units,multiplier,delta,formula,logtimefmt,valuemapid,params,ipmi_sensor,snmp_community,snmp_oid,snmpv3_securityname,snmpv3_securitylevel,snmpv3_authpassphrase,snmpv3_privpassphrase,authtype,username,password,publickey,privatekey,templateid,flags,filter,description,inventory_link,interfaceid) values (26742,'Mounted filesystem discovery','vfs.fs.discovery',10205,0,4,0,60,'',90,365,0,'','',0,0,'1','',null,'','','','','',0,'','',0,'','','','',26479,1,'

:@File systems for discovery','Discovery of file systems of different types as defined in global regular expression "File systems for discovery".',0,30364),(26743,'Free disk space on $1 (percentage)','vfs.fs.size[

,pfree]',10205,0,0,0,600,'',7,365,0,'','%',0,0,'1','',null,'','','','','',0,'','',0,'','','','',26481,2,'','',0,30364);