Take the time and do a good job and all should be fine.
I very carefully worked my way through the Kissell eBook on Taking Control of Upgrading to Leopard...doing all the maintenance steps and backing up [2X] and etc. It has taken the better part of the day but then I wanted to be slow and careful. I'm eager to work with it tonite and customize it a bit [another Take Control book] - but for now just know that using the step by step explanations in the TC book was great == and reminded me of or taught me about a number of other things as well about OSX.
