Backtrack Linux is full of really great tools including SQLScan which is a SQL Scanner that provides the ability to query Google for vulnerable hosts and extract MD5 hashes from the results. Unfortunately sqlscan.py was written for Python 2.3 or Python 2.4 and has not been maintained to be compatible with Python 2.6 which is the current version of Python installed on Backtrack Linux 5 R3. Backtrack 5 R3 is based off of Ubuntu 10.04 which had a release date of April, 2010 so needless to say some packages are out of date. It should be noted though that there is a lot to be said for stability in your operating system versus bleeding edge capabilities and I am sure when the time is correct the Backtrack team will be releasing a new version of Backtrack based on a newer version of Ubuntu.
Some tools in Backtrack Linux version 5 R3 were written for older versions of Python so if you are interested in using some of these tools in can be beneficial to install older versions of Python such as Python 2.4. Below I describe how to easily install Python 2.4 without causing issues with the Python 2.6 that is installed by default on Backtrack Linux 5 R3 or Ubuntu 10.04.
On one of my servers I run a couple sites via Django and recently when I upgraded the server it broke the Django sites that were running via FastCGI. After some investigation I was able to find the issue which happened to be a basic conflict between python2.4 which is the default python version on CentOS Linux and python2.6 which I installed to run via python26 instead of python. This way I can change the environment of any site that needs it to Python version 2.6 without much hassle. Below I describe the error in detail as well as what resolved the issue.