I don't know. All I know is that from the discussion on this list last week, I discovered *several* people have had a problem with the ZServer quitting for no apparent reason since the early days of Zope. Now, that sounds like a bug to me.
Actually, I believe several people have reported that Zope *hangs* on them, for unknown reasons. I didn't see a corroborative report of Zope *crashing* on them. These are likely (at least) two distinct problems. I'd like to help you. I'd like to help everybody, actually. But I can't without a little help from you. Providing a bug report that says "Zope crashes/hangs on me, I can't establish a pattern, it happens at all times of the day, and I haven't spend any time narrowing the symptoms down any further" is a bug report that I can't do much with. I can ask you for more information (which I've done), but otherwise I'm fairly helpless. We've solved these sorts of problems in the past with help from folks who were able/willing to narrow down the problem to a replicable test case. If you can spend the time to do the same, we can likely solve it or at least provide a workaround. - C