Question: I've got an RRDtool graph that has a huge spike after a reboot. I've tried using the popular `removespikes.pl` script on it, but just returns a "No peaks found.!". What's the best way to take care of this?

Answer: 
My normal answer is "You can't edit RRD files." or "You have to use `rrdtool` to dump it, edit the dump and restore it - that's too much work!", but you seem like a nice guy so I'll point you at [rrdEditor](http://www.leith.ie/rrdeditor/) :-)
The version of `removespikes.pl` linked in the answer above does not support the `-t` option. However, the latest version [20140730-lux](http://oss.oetiker.ch/rrdtool/pub/contrib/removespikes-20140730-lux.tar.gz) does. You can find it at the offical RRDTool website here: <http://oss.oetiker.ch/rrdtool/pub/contrib/>