hi all.. on current version of Lion.. one day i noticed that my 2011 MBA just started being slow on bootups and shutdowns. before it would take about ~7 secs til i see the screen.. now it's about three times longer. shutdowns used to be about ~5 secs.. now it's about three times longer as well. the only thing i've changed about it is bootcamp. i installed Win 7 taking up about 40GB. could that be the reason?