Reverting Back From Logic 8 To Logic 7, Considering migrating back to older version of Logic Options

[redstrype]

Basically I've got two rigs, my home studio and my mobile studio. Both are currently running Logic 8. My laptop is a Power Book g4 1.5 ghz, 1gb of Ram. I'm finding that, although Logic runs, it's very slow and I basically have to freeze every track that I'm not working on, a little annoying. What are peoples thoughts on migrating the laptop back to Logic 7 or even Logic 6? Or are there other ways to speed up the processing power? How much faster will the software run back in Logic 6? I realize I'll be sacrificing some compatibility as far as swapping projects back and forth, and also a number of features, but if that means I can work more efficently, maybe it's worth it. What are people's thoughts?

Any ideas would be greatly appreciated!

Thanks

-Strype