hi, since upgrading to leopard on my PowerMac G5 around christmas time i haven't performed any maintenace on my mac. i used to use Spring Cleaning, but found the app slightly segregated into different bits and pieces. I have used Onyx briefly, but apart from the basic scripts i don;t think it performs a thorough clean and optimization of the mac. Can anyone recommend a really good, efficient maintenance app for the mac as it is a 2005 PowerMac Quad G5, yet rapidly filling with files and so I want to keep it responsive. thanks!