I have a refurbished T30 with 256MB of memory in slot 0. I want to upgrade to 1GB, without using slot 1. I want to avoid possibly aggravating the slot 1 connection problem. I've heard that with a BIOS update I can upgrade to 1MB dimms. I can't find anything specific on this BIOS upgrade. I've heard that this connection problem is on T30's manufactured before 10/02. If this is true, how can I verify when my T30 was manufactured, or at least my motherboard?