Just a question, 

Are you using "Quickgraph" of "Accurate graphs" when producing this problem?


2013/12/3 Nikolay Shopik <shopik@inblock.ru>
Well looks like if I delete device with billed ports at also delete
billable past data or just borked mysql query?

I can paste &debug data of graph, but it easily reproducible on any
local install.
_______________________________________________
observium mailing list
observium@observium.org
http://postman.memetic.org/cgi-bin/mailman/listinfo/observium