[lacker]

Google App Engine uses 2.5.2 and that seems stable.

http://code.google.com/appengine/docs/whatisgoogleappengine....

[nihilocrat]

I think he is using the "enterprise" definition of "stable", which means "really, really old for no really good reason".

2.5.2 is "latest stable" for me, I've had no problems with it.