[arch-releng] Please test the recent isos

[Charles]

Hi,

Now everything looks fine for me with 2011.08.17. I can't report my 
install on the feedback page: the 2011.08.17 version isn't there. And I 
apparently am the first to test PXE booting.

I also updated the config examples of Trapezium 
(http://hg.vejnar.org/trapezium). Btw, do you think it worth mentioning 
it in the release new features ?

Thanks for the good work.

Charles