Hello Folks, I recently have been running into problems with my Macbook Pro in that an hour or two after startup, the hot corners no longer work and command tab no longer works. That is when I try to use them nothing happens at all. The keyboard still functions normally other than that. Also, if I then try to shutdown the system appears to begin the shutdown in that my desktop icons disappear, but then the machine just sits there and will never shutdown. I am then forced to hold the power key down to force a hard shutdown. Then once I do a startup, I have my hot corners back and command tab works. Until it sits for a while and then I start the cycle over. Also, it only has done this when I am at home and not at work. The only difference between the setups (that I am aware of anyway) is that I have a different external monitor and I use wireless network at home and I am hard wired at work. The same apps are running at home and work. One other difference is that my computer is in use almost 100% of the time at work where at home it will sit allowing the screen saver to kick in. I am running a Mac OSX 10.5.6 with the latest updates. I recently installed the Netflix Instant Watch software. But I don't know if it started then or not. Any ideas anyone? This is the first real problem I have had with any Mac I have owned.