Sorry for opening a new thread. I read the thread talking about the boot up time 7-10 sec slower after 10.6.5 update, but my story is a little different. I got my MBA last week (2.13GB, 4GB, 256SSD). Before the update of 10.6.5, the boot up time was about 25 seconds. After the update today, boot up time is around 42 seconds. I have restarted several times and it remains at 42 seconds. (It takes 20 seconds before the Apple logo appears, and another about 20 seconds to show the desktop). But after reading that thread, I heard that other's MBAs boot up within 10-15 seconds. I know it's not a such big matter like sky falling, but it's really frustrating. I tested with my girlfriend's MBP 13" 2009 with 250 GB HDD and it can boot up within 35 seconds, even faster than my new MBA. Does anyone one why my MBA is slow? Is there something I can do to fix this problem? Any reply useful would be very appreciated. Thank you in advance.