About RELEASE_5_3-p2

[Giuliano Cardozo Medalha]

People,

I have installed FreeBSD 5.3 and yesterday I have used cvsup to rebuild 
my system.

After a installworld and kernel rebuild I did a shutdown -r.

Now, if I use uname -a it appears for me:

FreeBSD-RELEASE_5_3-p2

How do I know without doing it ... witch patch version is ?

How can I check about a FreeBSD-RELEASE_5_3-p3 release ... without 
rebuild my system ?

Thanks a lot,

Giuliano