HACK yukyuk:~/playground/allmydata/buildmaster$ time darcs pull
NOTE: the server is running a version of darcs prior to 2.0.0.              

This means that you may see error messages fetching files such as
_darcs/prefs/format, which you can safely ignore.  Installing
darcs 2 on the server will eliminate these error messages and also
speed up ssh-based commands, such as darcs push.

scp: /home/buildmaster/buildmaster/_darcs/format: No such file or directory
scp: /home/buildmaster/buildmaster/_darcs/prefs/sources: No such file or directory
Pulling from "zooko@dev.allmydata.com:/home/buildmaster/buildmaster"...     
Thu Aug 28 14:34:58 MDT 2008  zooko@zooko.com
  * add solaris to general builders
Shall I pull this patch? (1/1)  [ynWsfvpxdaqjk], or ? for help: y
Finished pulling and applying.
                                                                            
real    0m37.794s
user    0m0.097s
sys     0m0.030s
HACK yukyuk:~/playground/allmydata/buildmaster$ ssh zooko@dev.allmydata.com
"darcs --version"
2.0.2 (+ 1 patch)

Yep! That would be a duplicate of a known issue, and an urgent, release-critical
one at that.  Thanks

Fixed (by removing the message).