[Zope] question on external method invocation

Hi -- I've encountered what seems to be a bug in external method invocation. With all my external methods, the first time any given one is run during a session, Zope fails to pass the parameters. If I hit the "back" arrow on the browser and then hit the "Submit" button a second time, then it works. Why is this? Is there any way to change it? -- Matt -------------------------------------- Nu sculon herigean heovonrices Weard Meotodes mighte ond His modgethanc Now we must praise the Kingdom of Heaven's Sovereign, The Measurer's power and his completed design --First two lines, Caedmon's Hymn ---------------------------------------