Figure out why gabelmoo is failing to measure so many relays

From irc conversation:

[08:34] < juga> hmm, it has measured ~7000 relays, but for some reason it failed with ~3000
[...]
[09:11] < juga> Sebastian: GeKo: one possible reason i was thinking on, is that some exits don't allow to exit to places in the same country and many exits 
                are in DE, but that doesn't seem to be the case. Sebastian: is it possible that the web server is not managing well many requests? (most of 
                them time out)
[09:13] < juga> though if it's the same torflow was using, it shouldn't be the case either...