Well, Whomever posted that link is retarded then...
" iJailBreak 0.5.3
iJailBreak is an automated jailbreaker for your iPod Touch licensed under the GNU General Public License v2 written by 13-year-old AriX. The only user interaction required is for you to restart the iPod Touch. Works on Macintel OS X Tiger. PPC version is in the works.
You can discuss iJailBreak at the apple-Touch forums...."
LOL, yeah....they likely are/were. It always pays to not download from a reposting website like the one linked and go straight to the source. The author actually maintains a fairly good Google index of his work where you can get the most recent builds.