[Pkg-mailman-hackers] purge problem?

[GCS]

Dear Co-Maintainers,

 Please check if you can install and _purge_ mailman 2.4.1 as for me
it's very strange, hangs in the postrm script at the line db_purge. IMHO
a lock is held on /var/cache/debconf/config.dat and db_purge would like
to wait for it being released. Please someone confirm or veto it, as it
would be _important_.
Hmmm. It seems it's called twice, probably from itself:
root     13825  0.1  5.8 30976 29920 pts/1   S    00:37   0:01 dpkg --purge mailman
root     13828  0.0  1.3  8800 7184 pts/1    S    00:37   0:00 /usr/bin/perl -w /usr/share/debconf/frontend /var/lib/dpkg/info/mailman.postrm purge
root      6627  0.0  0.1  1916  820 pts/1    S    00:49   0:00 /bin/sh -ex /var/lib/dpkg/info/mailman.postrm purge

Thanks in advance,
GCS