I was using nginx version 0.6.22 till last Friday.
After that I downloaded the latest version 0.6.25 and then installed it
the same location as of 0.6.22(default location).
Now I have the latest nginx file inside nginx-dir/sbin, but when i check
version of the server in the header response, it still says 0.6.22.
So, my question is why it is still showing the older version in header