Could be! It may have fixed some errors somewhere, and OS X could possibly run faster. Want to try something else that may make it run faster, as well?
Try this:
1. Close all open programs.
2. Open the terminal.
3. Type: sudo update_prebindings -root / -force
4. Sit back for 5-30 minutes, depending on how many applications you have.
This will update the "prebindings" of your applications, meaning that it will go and tell all the applications where to find their dynamic libraries, so they don't have to find them themselves when they launch. It should speed up your application launch times a little. Of course, right AFTER you do this, I recommend you restart... the first time you launch your apps after doing this, it may actually take LONGER than normal... at least, that's what I found unless I restarted first.