Whatever is funny is subversive, every joke is ultimately a custard pie - George Orwell
A SOURCE FROM Asustek has shed light on the reasoning for older Celeron's appearing in new models of the popular Eee PC.
"There's a serious shortage of Atom microprocessors," said the executive source speaking to PC World.
The source declined to be named because they are not authorized to speak to the media.
Apparently Asustek will be focusing the company's Atom supply for the Eee PC 901, 1000 and 1000H models, which form the higher end of the Eee PC range.
The newer, less expensive 904HD and 1000HD models will be utilising the Celeron processors.
The chips in use are allegedly from processors first released in 2004 - specifically the 900MHz Celeron M 353.
Intel expects to have the Atom supply issue resolved by the end of the third quarter, which may give VIA's Nano an advantage within the market.
Athlon anyone? µ
A spokesAMD was heard saying, "We prefer to ship our CPUs with all or most of the cache memory enabled."

Jim
The netbooks using the Celeron M aren't that much worse off then those with the Atom. New and shiny is always desirable, but the performance and efficiency delta is small.
Asus have never stopped shipping eeePC's with CeleronM's so nothing has changed. The models with the Atom have a much desired battery life though. 
PS- how many of these old Celerons can Intel have sitting around?