pulling git -- version confusion

I did a git pull today

When I compile it
git  --version gives
git version 1.6.3.3.334.g916e1

Whereas latest stable shown on http://git-scm.com/
is 1.6.5.2.


Note:

git branch shows a star before master

git tag contains v1.6.5.2 as well as v1.6.3.3

When I checkout branch next
git version becomes  1.6.0.rc1.194.g9e4e

Can someone explain whats happening or am I missing something basic?