How do I get an installation bug fixed for Jaunty?

I recently dragged an old Cyrix 6x86MX PR200 system out of the basement and tried installing Intrepid Server on it. The install failed (unable to find a suitable kernel). In the UbuntuForums I found someone else had the same trouble and had identified the source of problem - base-installer/kernel.sh does not have a test for CyrixInstead and defaults to a 486 (and then is unable to find a suitable kernel?!). I was able to edit kernel.sh during the installation to make it echo 586 when a Cyrix chip is present (this was just a quick hack to see if I could work around the bug - the real fix would be a dozen or so lines of shell code). This allowed the installation to complete.

My question is this - how do I get kernel.sh changed in time for the release of Jaunty? Being an installation bug it really needs to be fixed on the installation CD.

I downloaded Jaunty Alpha-4 and confirmed that the bug is still present. I created a bug report on launchpad (number 329000) but it remains un-triaged 5 days later. I now find that Ubuntu is entering feature freeze tomorrow. Is this bug a feature?