dpkg upgrade error

[David Gardi <debian@gardisoft.org>]

Hi,
I've just done an apt-get upgrade, and this is the error.

Unpacking replacement gkrellmms ...
Preparing to replace libdb2-util 2:2.7.7.0-2 (using 
.../libdb2-util_2%3a2.7.7.0-3_i386.deb) ...
dpkg: error processing 
/var/cache/apt/archives/libdb2-util_2%3a2.7.7.0-3_i386.deb (--unpack):
subprocess pre-installation script returned error exit status 1
Preparing to replace libruby 1.6.5-5 (using 
.../libruby_1.6.6-1_i386.deb) ...
Unpacking replacement libruby ...
Preparing to replace ruby 1.6.5-5 (using 
.../archives/ruby_1.6.6-1_i386.deb) ...
Unpacking replacement ruby ...
Errors were encountered while processing:
/var/cache/apt/archives/libdb2-util_2%3a2.7.7.0-3_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Any ideas?
David.