Not sure if this is the right forum for this...
Anyway, a few days ago I picked up an eMachines D620 from Best Buy for under $400. It had Vista pre-installed, but I went ahead and installed Ubuntu 8.10 immediatly. Install took about 45 minutes and everything worked minus the built in wifi. After about an hour of googling and testing solutions I found this site http://madberry.org/2008/08/how-to-get-atheros-ar242x-wireless-to-work-2/ took about 15 minutes but the wifi worked wonderfully after that.
I've also installed Flash 8 via Wine and thus far have had no issues
Just thought I'd share my experience :)