Comment 18 for bug 177439

The steps described by Paul above are not reproducible on Feisty based on experience and experience of other users on the ubuntuforums.com. I do not see version .32 you have described available in the repository. (I use Kubuntu but I have tried the Synaptics as well )

No other version then .33 is also shown in the web interface to ubuntu feisty: http://packages.ubuntu.com/cgi-bin/search_packages.pl?searchon=names&version=all&exact=1&keywords=linux-image-2.6.20-16-386

Here are the results:
$ sudo apt-get -s install linux-image-2.6.20-16-386=2.6.20-16.32
Password:
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Version '2.6.20-16.32' for 'linux-image-2.6.20-16-386' was not found