again > It is probably enough to increase CT_Shm->$shm_size in local.inc. I search archive and found this. It may help you . http://marc.theaimsgroup.com/?l=imp&m=100880047228767&w=2 http://marc.theaimsgroup.com/?l=imp&m=99294974806199&w=2 > I think the problem must be diagnosed properly before applying some random solution. Thank you for your suggestion ,Lars :-)