I just wanted to save lots of people... umm... lots of time. Most of this issues people are experiencing in going from Tiger to Leopard are resulting from leaving 3rd party tweak / modification utilities installed while atempting to perform an upgrade/archive & install. In order to have a smooth install, remove all your tweak/mod programs before you attempt to install Leopard. That will save tons of trouble and frustration. One final word. I'm probably going to be flamed for saying this... using tweak / modification tools on a Mac seems to cause more problems than it's worth. Consider using a vanilla interface and you'll have far fewer problems. I guess i've noticed this applies really to any OS, even Vista/XP.