I'm working on a project for which Zope seems appropriate. However, an outside consultant for our client claims that the major problem with Zope is that it requires Python, and Python is much less stable than something like Perl. I haven't used Zope or Python enough to have counterarguments to this comment. I don't know specifically what stability issues this person may be referring to, but I would like to ask for feedback on this persons comment.
One tiny datapoint. I set up a small Engineering Change Request system w/ zope and PostgreSQL 6 months ago. It has been running flawlessly [1] ever since. Machine uptimes are in the mid-2 digits (i.e. about every 2 months we have to rearrange things in the lab). Note this is a very low load application. As for perl/python stability, you could go back and see how often new releases come out and use that as an argument. -- cary [1] Well, except for my own bugs.