I was searching for the documentation for itertools via Google and was sent here:

    http://www.python.org/doc//current/library/itertools.html

After glancing at the upper-left hand corner, I wondered why Google was sending people to the 2.6 documentation, and a release candidate at that.  After checking out the URL, it became obvious that there's an issue somewhere in the Python docs that is causing this.

Quite a bizarre and obscure bug, but probably should be fixed since a major search engine is passing front-page search traffic there.

To clarify: http://www.python.org/doc//current/library/itertools.html returns the corresponding page from the 2.6.5c2 docs, while http://www.python.org/doc/current/library/itertools.html returns a 301 redirect to http://docs.python.org/library/itertools.html.  

Presumably there's a RewriteRule that fails to match with the doubled-slashes, so Apache falls through to the filesystem.  Maybe there's an old 'current' symlink that's pointing at 2.6.5c2.

I zapped the 2.6.c2 docs. I don't particularly feel like messing with mod_rewrite horrors on python.org to fix it to redirect properly. I think we should drop redirects those soon anyway. Probably will happen with the new site...