Ars Technica OS X 10.1 Review
Joystickit writes: "John Siracusa over at Arstechnica has posted his review of OS X 10.1. He comes to the conclusion that 10.1 is much improved but still leaves much to be desired. It is an excellent read. He always seems to have the most in-depth reviews. Check it out." John's earlier OS X reviews are excellent as well; seeing what Apple does right and wrong is informative reading no matter what OS you prefer.
If this is what is required to make OSX useable, Apple is finished. Memory is cheap but you have to market to what the average Mac owner already has.
I can practically assure you that very few Mac users have 512MB desktop systems.
Good luck Apple.