Status of autovacuum and the sporadic stats failures ?

I'm still getting random failures from some of my buildfarm members
which is starting to get a bit irritating and annoying :-(

some recent failures:

http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=zebra&dt=2007-02-06%2015:25:04
http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=clownfish&dt=2007-02-06%2000:03:04
http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=clownfish&dt=2007-02-04%2003:03:09
http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=impala&dt=2007-02-02%2003:03:02


any ideas ?


Stefan