Anybody having overall performance issues after applying this firmware update? After the update, my MacBook Pro is extermely sluggish. Prior to the update, I was zipping along like most happy MacBook Pro owners. After the update, I constantly see the dreaded beach ball when doing almost anything with the laptop, Safari pages take longer to load, etc. It's almost as if the udpate had the opposite effect and actually throttled down my WD 500GB HDD performance to a large degree. Like I said, prior to the update all was good. I've been searching to see if there is a way to revert back to the previous firmware to validate that the update caused the problem but I haven't been successfull in finding anything yet. Any thoughts?