There isn't any lags of that kind at all, scrolling and typing is smooth as a baby's butt. I don't remember problems like that with my WD Scorpio either.
Try creating a different user and see if the problem exist there. You could also try installing OSX on an external drive and boot from that.
Already tried creating a different user, but can try booting from an external drive!
I can see that i had a misspell in my last post. What i meant to say is that my drive is an WD Scorpio Blue. I have the same problems as the OP had / have.
- Can it be the 4K alignment thing, that's slowing my drive down?
- And, if that's the case, how come you didn't have problems with your Scorpio Black. Because it's higher RPM? Or the alignment thing?
Thanks again