Hi Dominique, Thanks for testing. This time, whatever is going wrong here is probably not my fault, because I don't think I changed anything in this area for v18. Actually, I'm unaware of anyone else having made significant changes either, but that could very easily be a case of me not paying enough attention. I think we might need to know more about what exactly happened in order to track it down.
-- Robert Haas EDB: http://www.enterprisedb.com