Thanks Simon, I changed the heartbeat to the double (600) and chanced the xff to 0.5 and now it works. Thanks again. Therry Angenent -- View this message in context: http://rrd-mailinglists.937164.n2.nabble.com/Update-not-working-tp6261710p6271812.html Sent from the RRDtool Users Mailinglist mailing list archive at Nabble.com.