I thought that 10.4.0 Tiger and 10.5.0 Leopard were a lot rougher around the edges when it was first released. I remember a few show stoppers when Tiger and Leopard came out where we couldn't integrate it into our work environment for months. Even though I have been using it for only a day now, 10.6.0 seems a great deal better off than when Tiger and Leopard launched. What do you think?