Why arent you just using OS2006 which should be more stable than anything else. Also, what are you doing with it? My 770 does slow down, but I amlost never freeze. More likely is Opera to quit, especially if I have more than 3 windows open. What are you doing on it mostly?
OS2006 runs fairly well, but at some point, it just freezes. Could be the browser, could be the application installer - whatever. Nothing will allow me to regain control, and the only solution is to remove the battery - obviously creating an even worse situation. This usually then leads into the "reboot from hell" - the continuous rebooting of the system, with whatever is running in so hard a run, you can't regain control of it, and it's impossible to shut it down, short of removing the battery - again.