Hi, I have some difficulties in installing SuSE9.2 on my Athlon64 3500+ PC, if someone has solved this problem before, please provide me some help. 1. My PC has 4 1Gb DDR400 RAM and 1 Athlon64 3500+ (939), ASUS-SLI Delux motherboard with 2 ASUS N6600GT graphic cards. 2. Before installing SuSE9.2, I updated the motherboard's BIOS to the latest version. 3. After installed SuSE9.2 from the DVD with 2GB RAM on the motherboard, I proceeded on-line update to 2.6.8-24.11-default.x86_64, then I install all 4 1GB memory back to the motherboard and reboot the system. With command top, I found only 2.8GB memory recognized by the system. I wondoer if this is normal? or the updated kernel is still not able to recognize 4GB of memory? Jyh-Shyong Ho, Ph.D. Research Scientist National Center for high Performance Computing Hsinchu, Taiwan, ROC