So I have a WD Scorpio Blue that I threw in my mbp 5,5 last year. Since day one it has had random lags and short but frequent beachballing. Especially when typing in word or in posts such as this. It is beginning to drive me nuts. I considered upgrading to a WD Scorpio Black but all the reviews I keep reading lead me to believe this might fix my issue but it might not. It also might make much more noticible vibration, but it might not. It might make more noise, but it might not. So I havent set on buying one yet. I want to know, will erasing, reformatting, and reinstalling off a backup possible remedy this issue? I have no idea whether or not this will do anything but figured it is worth a try since other than the little random lags I cant really complain about the drive. Also I read some people saying it may be an issue with incompatible firmware but I am not sure how to check what firmware version I am running. Also those posts were over a year old. I have scoured the interwebs today with no luck and I am finally turning to you guys for help. Thanks.