diablo@x61s ~ $ sudo apt-get dist-upgrade 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
Setting up chromium-browser (12.0.742.112~r90304-0ubuntu0.11.04.1) ...
update-alternatives: error: /var/lib/dpkg/alternatives/gnome-www-browser corrupt: invalid status
dpkg: error processing chromium-browser (--configure):
 subprocess installed post-installation script returned error exit status 2
Setting up firefox (7.0.1+build1+nobinonly-0ubuntu0.11.04.1) ...
update-alternatives: error: /var/lib/dpkg/alternatives/gnome-www-browser corrupt: invalid status
dpkg: error processing firefox (--configure):
 subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
 chromium-browser
 firefox
E: Sub-process /usr/bin/dpkg returned an error code (1)