These are the correct files. All the 32 bit version files are about 18 months old but have been moved around so that the dates you see are not the creation dates. I figured that most people would not want the 32 bit version so it has not been updated recently.
You can download the files from MAA or Rochester (see http://webwork.maa.org/wiki/Installing_from_WW2.4_Ubuntu9.10_Vanilla_LiveDVD#Download_the_iso_image). You may find the Rochester server a bit faster.
A new version of the 32 and 64 bit distributions will be released sometime in May after the Ubuntu 11.04 release. I may also decide to base these distributions on the Ubuntu 10.04 LTS release.
This forum has a limit to the number of forum postings you can make in a given time period - this is currently set at 5 posting(s) in 1 day