I have a very old version of it and it refuses to install new .deb files
This is the original problem:
Trying to install Google’s mod_pagespeed for Apache.
Result:
dpkg: regarding
mod-pagespeed-beta_current_i386.deb
containing mod-pagespeed-beta,
pre-dependency problem:
mod-pagespeed-beta pre-depends on dpkg
(>= 1.14.0) dpkg is installed, but is
version 1.13.26.
Get the .deb for
dpkgand install it (but you should really be doing it viaapt-getoraptitude). Your problem is not that your version ofdpkgwould not install anything, but that the particular package requires being installed by newer version.