I have a Late 2010 MacBook Air, and it has a 256 GB SSD, 2.13 GHz processor, and 4 GB RAM. It has been lightning fast ever since I bought it and I upgraded to OS X Lion and it was super fast. Boot time was 10-12 seconds (time to get to login screen), shut down time was 3 seconds.
During the last couple of months, my MacBook Air seems to be have slowed down regarding boot time and shut down time. Current boot time is 50-60 seconds, and shutdown time is 10-15 seconds.
I do not know the reason for this. Applications don't seem to have much lag though. It is my boot time that is a MAJOR problem!
I recently cleared a lot of useless memory on my computer and emptied the trash, and cleared the cache memory (with an app), and computer has a LOT of free space and no applications are loaded on start-up either.
Can anyone tell me how to get back the original boot time performance?