Well, then you are not following the news close enough. A new firmware 2.0.7.1 have been released on dec 16 which fixes a lot of problems of the old firmware and you can get the 1ghz back too.
It is a great device and I am even thinking about buying the 4.3 inches one too. I got a free Ipod Touch 4g for Christmas, and 2 weeks now I still haven't have the desire to open it. I just have so much fun with my A70.
Go to the following forum, a lot of details about how you can make your A70 works smoothly.

http://forum.archosfans.com/viewtopic.php?f=63&t=43637

Archos is a good company and they do listen to their customers and support their products. I am glad I bought it.