Not sure why but on a wiped fresh install of your 1.3 ROM I installed the Greenpower app after creating my Google account and setup the market and it worked.!
I would like to say why it worked, perhaps more important is to why it did not work before. That I can't answer, if it was due to an error that I was doing, not sure how as I have used either Juice Defender or Greenpower for quite a while now, then I would note it here.
Next I need to get hold of my wife's phone as she is using the timeriffic application. Albeit that it failed to work last time I will try it again but I'm at a lost with understanding what I write in that it is not being consistent.
Thanks very much with your testing and with the modifications you have done with that Go Launcher EX I will go back to that one
Do you happen to use the Go SMS Pro for your text messages...? Just wondering if you did do you need to do any "magic" wizardry on that to optimise its use, as you did with the launcher..?