Geoff,
You were plotting the size of the routing table at very tight
intervals (1 hour or so as I recall) - are these graphs online
somewhere?
Every hour on the hour I take a sample.
The latest and greatest graph can be found at (sorry, no gif or jpeg
available currently):
ftp://ftp.nic.surfnet.nl/surfnet/net-management/ip/nets.ps
Please note the flat-line at the end of the graph: Due to a reconfig of
the router I take the samples from during my holidays I am missing some
data points :-(. But the last sample points that are in there are well
above 40000.