Hi, thanks alot for your answers. Yesterday I have updated the kernel. After a reboot, the ECC-Kernel error still appears. Then I've cleaned the RAM-Slots with nose-paper :), rebooted the machine, and the error was away! Unbelievable, the error was before on both the machines. Yesterday night, i've switched my Slony-replication and the IP address. Right now, thanks to god, I'm on a safe side. :) Now i will clean the old production machine :) and putting it back to the replication. :) Over again, thanks very much, I like PostgreSQL and the Community, it's a very very good project :)! Regards, Martin _______________________________________________________________________ Jetzt neu! Schützen Sie Ihren PC mit McAfee und WEB.DE. 3 Monate kostenlos testen. http://www.pc-sicherheit.web.de/startseite/?mc=022220 ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq