Any app to measure the boot time?
Yes.
http://www.sevenforums.com/tutorials/720-restart-time.html
Many of the posts in this thread are from people who used that app.
This is the one I used too! But it starts counting from the time you press ok (and in my laptop that includes the time it takes to "shut down" + 10 sec lag for discharging the electronics + booting). Well this a reboot

anyway but for example in my desktop at work I've no lag for dicharging the electronics...
Anyway this is just for curiosity! The most important, for me, it is a functional computer that performs at is best without any crash!
By the way, I use Norton utilities to defragment my disk! In my XP laptop I allways used the defrag from windows! Is it better to use windows defrag utilitie (now I'm in Win 7) or it is the same?
Regards,
paulo