Yeah,

LW freezes my Mac up quite a lot. 3 times today already...I don't get anything that tells me anything, but I can't do anything as everything is Frozen...I try to shutdown OPTION-APPLE-ESC to force quit and if that doesn't come up....
I shutdown the Mac by the Power Button.
When I reboot (50% of the time) I have NO Net connection. The best thing to do is DIS-CONNECT the power of the Cable modem for about five minutes. THEN plug the Cable modem back in...it should reset....Perhaps it takes five minutes or longer depending on your cable line speed. I usually use Safari and check Google to see if I'm connected again....good luck....