SK8V 9.1 works with 2gb hangs with 4gb

Hi- I upgraded to 4gb of ram on my asus sk8v and changed bios so it sees 4gb. However, install hangs and boot hangs at eth0 (DHCP) . ( one . only) If I pull 2gb it boots fine and it works with both with old and new paired and with 1 stick of new and old so I don't think its new memory. Any ideas? Robert (Bob) L. Sandefur PE Senior Geostatistician / Reserve Analyst CAM 200 Union Suite G-13 Lakewood, Co 80228 rsandefur@cam-llc.com 303 472-3240 (cell) <-best choice 303 716-1617 ext 14