Thanks Bryan ;)
A little addendum :
* This feature is relatively new, and even if we have been testing it
and have fixed, in particular, some platform-dependent issues - Did
you read windows issues ? - some nasty bugs might still subsist.
Please, please, please, do not let them be : allow us to hunt them,
report them ! :) 
* On a performance side, I'd be very interested on any comparative
ram usage reports from you, regular bot owners. Ram usage on interwiki
runs has always been a problem, and it has also always been a very
tricky issue to diagnose, because it depends a lot on the data
(obviously, if only a couple of interwiki cycles are encountered
during the run, very little memory will be used). Any comparative data
on memory usage with and without diskcache would be much appreciated.
#pywikipediabot on Freenode
Nicolas Dumazet — NicDumZ [ nIk.d̪ymz ]
Deuxième année ENSIMAG.