Another problem AMD have is that AM2 has not been a successful socket. This has resulted in a relatively small (compared to Intel 775) user base that would potentially consider upgrade.
The fact that P2 struggles to beat Intel's older (and comparatively priced) Core2 architecture will mean the pain is not over for AMD.
I'm still on 939.
I resented the fact that only a year (ish) after I switched from Socket A to S939, they went and changed it again.
Wonder how many of us would still be using AMD chips if there were decent quads available for the 939 platform?
Would it work for graphics card makers?
Would we put up with a new PCI-E revamp every other year? If it was incompatible with previous slots?