I have a Zope app that allows users to edit invoices. The invoices are selected from a list (of hRefs) (1) User selects an Invoice from a list in order to edit it (2) There is a delay so the user *again* selects the same invoice BEFORE the first click renders the new form. (3) Everything dies and I have to restart Zope. So it seems that sucessive calls to the same methods, eg a) the zSql method that will read invoice data b) a DTML method to display an invoice form. Is crashing Zope. (I have to restart it). I realize this is a general description. But at this point I am wondering if others have experienced this kind of problem? Ideas? Suggestions? I am using K Interbase connection, Zope 2.61, Windows XP I get no error-messages. Thanks much, David