Hi jcwiekalo,
If you are running Linux/BSD, you can download the package for 2.5.1 from the
download page. In windows you can uninstall 2.5.0 and install 2.5.1.
If you want to use the latest stable release I would recommend you point your subversion the the release branch for 2.5.x, for example:
cd /tmp/
mkidr dradis-2.5
cd dradis-2.5
svn co https://dradis.svn.sourceforge.net/svnroot/dradis/server/branches/RB-2.5/ server
cd server
cp config/database.yml.template config/database.yml
rake dradis:reset
Whenever we release 2.5.2, you will just need to go to that folder and
svn update and you will autamtically be in the latest version.
Whenever we release 2.6, you will to upgrade your installation or follow the same process but pointing to RB-2.6 instead.
I am not sure if this info is what you were after, please let me know if it helps,
Daniel