Rioght above the system requirements clause is a paragraph which says:

Link: http://www.worldcommunitygrid.org/help/viewSearch.do?searchString=linux

Have you looked at what that link leads to? A page which lists only 2 versions, 6.6.36 and 6.4.5, both of which are more recent that WCG recommends!

There are often comments about encouraging users to contribute to WCG, yet WCG fails to document even the simplest of things, putting all the onus on the user to go and find the relevant version for themselves. As you quoted: "Which version of the Linux client you should use depends highly on the libraries that you have installed on your machine." But all you'd have to do is list the library dependencies on the install page and the issue would go away, which is why I suggested it.

I'm quite happy with my current versions and the time wasted on downloading a new one is no big deal, but this site is set up in pretty much the best way possible to alienate new users and make things hard for them. Why makes things 100 times harder for users when you could make it dead simple by having a dependency list just like you find on a download page for, say, debian packages?

Here's a wiki link to a page on various Linux installs contributed and augmented by a number of volunteers: http://boinc.berkeley.edu/wiki/Installing_on_Linux.