[Zope] Locks?

I've got a situation where I'd like to be able to have a mutex lock. Unfortunately, I can't use Lock objects out of the thread module as they appear to be unpicklable. Does Zope have any mutex objects I can use? -- Benno Rice "No, no. We're *sweet* and XNFP Aries Dark Subculture- *innocent* evil bastards." friendly Internet Geek benno@netizen.com.au "Defend your joy"