Preparing to replace firefox 4.0+nobinonly-0ubuntu3 (using .../firefox_4.0.1+build1+nobinonly-0ubuntu0.11.04.2_amd64.deb) ...
Unpacking replacement firefox ...
dpkg-deb (subprocess): data: internal gzip read error: '<fd:0>: invalid code lengths set'
dpkg-deb: error: subprocess <decompress> returned error exit status 2
dpkg: error processing /var/cache/apt/archives/firefox_4.0.1+build1+nobinonly-0ubuntu0.11.04.2_amd64.deb (--unpack):
 short read on buffer copy for backend dpkg-deb during `./usr/lib/firefox-4.0.1/omni.jar'
Please restart all running instances of firefox, or you will experience problems.
dpkg-deb: error: `/var/cache/apt/archives/libreoffice-common_1%3a3.3.2-1ubuntu5_all.deb' is not a debian format archive
dpkg: error processing /var/cache/apt/archives/libreoffice-common_1%3a3.3.2-1ubuntu5_all.deb (--unpack):
 subprocess dpkg-deb --control returned error exit status 2