How ahead are you guys in the (Python) real world?

[Ray]

Since I haven't used Python at work, I am using Python 2.5 right now.
However I wonder, how fast are you guys moving from version to version
at work? As an illustration my ex-company just moved to Java 5, which
was released around... what, 2-3 years ago? (While I am running Java 6
at home)

Is it the same in the Python world? What version of Python is used in,
say, Google? Is it even 2.4 yet?