Chris,
I would recompile hobbit with the newer version of rrdtool vs. downgrading rrd.
# rrdtool info mrtg.router.gi0_1.rrd | grep rrd_ver rrd_version = "0003"
# rrdtool -V RRDtool 1.2.11 Copyright 1997-2005 by Tobias Oetiker <tobi (at) oetiker.ch> Compiled Fri Nov 11 18:44:49 CST 2005
So it does work with 1.2.11
I would keep that hobbitgraph FNPATTERN change as well (thanks Henrik for incorporating that into the new hobbit)
Thanks
-- Christophe Truffier Pack-Solutions