Hi all, Thanks for looking into it. The problem is solved: on both machines there appeared to be a hung-up backup process that locked PostgreSQL. -- Groeten, Joost Kraaijeveld Askesis B.V. Molukkenstraat 14 6524NB Nijmegen tel: 024-3888063 / 06-51855277 fax: 024-3608416 web: www.askesis.nl