rancid hangs due to expect, ssh, or cisco?

[Zhang, Anchi]

I tried it and the only difference it seems to have made was to extend the
 hang period indefinitely.

With "exec-timeout 1" the hang is about a minute:

log2% date; clogin -c "sho run" ecdc2ibgp>/dev/null; date
Mon Dec 30 17:16:17 CST 2002
Mon Dec 30 17:17:20 CST 2002

Today, I was able to have a successful Rancid collection on a router that I
had never been able to just by simply removing a few unimportant lines from
the config.  I was also able to cause a failed collection on a router by
simply adding enough lines after

ip access-list extended testing

Anchi