i'm getting some funny behavior using a (separate from Zope's) ZODB from External Methods. after much thrashing, i've got my application working. however, every so often, when i click on a submit button that invokes an External Method, i get: Could not lock the database file. There must be another process that has opened the file. the odd thing is that if i click the browser "back" button, then hit my button again, it works. occasionally i need do this back/resubmit thing more than once, but usually once suffices. smells like a race condition to me. has anyone else seen this, or have an idea how i can avoid it? -- Garry Hodgson Every night garry@sage.att.com a child is born Software Innovation Services is a Holy Night. AT&T Labs - Sophia Lyon Fahs