Narcissism and self-promotion as usual.

People who have any trouble with a system perl or python or java are shipping their own versions within the package.

Sap Bussiness Object, for example, comes with its own perl 5.004 and Sun JDK 1.4.

It is also possible to provide an up-to-date package for most used OSes. You cannot replace system's default python interpreter, because to much things in distros are depended on it, put it could be /opt/python

btw, it is only Debian-based systems and RHEL who are lagging behind. Fedora is always up to date.

I'm considering this post as just a flame-generator. There is no problem at all.