On Wed, Feb 13, 2008 at 04:01:43PM +0000, Neil Saunders wrote: > If no data is received in 600 seconds, mark it as "unknown". > Immediately add another record for 23 minutes later: You are aware that 600 seconds is less than 23 minutes, yes? -- Alex van den Bogaerdt http://www.vandenbogaerdt.nl/rrdtool/