As usual - before a release of a PAID major upgrade (10.6), apple releases a shitty upgrade with no REAL new features but with a HUGE number of BUGS. How come that a system that worked flawlessly suddenly stop recognizing my home wireless net, the bluetooth disappears, my 2.5G core 2 Duo MacBook Pro that used to lunch like a rocket starts to behave like a Window machine with the colorful spinning ball occupying more and more time, and the computer NEVER goes to sleep. I might be a paranoid, but these phenomena are so similar to those I encountered with 10.4.11 that its just amazing.