I'm down to 2 machines folding and the others just say "Ready". I also notice others are the same. DocJonz and StreetSam.
My GTX260s have been idling for about a month or two now too - I do keep reading about the Work Assignment server has ran out.
I seem to be only receiving core 15 work units lately which make my new/secondhand r9 280's look very sad and that PPD; sinking fast
I posted on the official forum early this morning Empty Work Server Assignment, and it seems the issue is down to problems with New AS code - they are on the case ...
Assignment Server is now back up and running - if you haven't picked up a new WU yet, just pause the client and then re-start it folding again.