Whiled the evening away tonight playing around with software suspend again. I am running 2.6.6 + software suspend 2.0.0.81 on my laptop. It's almost all good news. I no longer have to make sure the ohci-hcd usb module is unloaded, and it even works ok with cpufreq now. The only module I still have to unload and reload now is the prism54 module for my network card. If I leave it in, the suspend never completes. I can also suspend and resume with 3d enabled for video and no need to switch to a virtual console. I can also use all 1GB of my memory and have preempt support. It's all looking very good now.