I have tried RC4, but there's no differences My results using my configuration are : MySQL 4 is 6 times faster than pgSQL Firebird 1.5 is 3 times faster than pgSQL Are these results coherent ? May be the problem comes more from ZeosLib than pgSQL8 ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to majordomo@xxxxxxxxxxxxxx