I have had the DGL-4500 for 8 months for the first 5 months working pretty good but the last 3 months it locks up constantly sometimes 2-3 times a day. I am on 1.12 and afraid to upgrade to 1.15 but want to know if this will fix my problem. I have 2 wireless Vista laptops, 1 Wireless MAC, 2 wireless XP Desktop machines, XBOX 360 and WII. I am really struggling with this and was going to purchase another NON-D-link router but see they all are having similar problems. Suggestions?