I didn't buy it to use as a bridge or repeater. It was bought for use as a wired and wireless router with a PC Shareport. The A1 version failed miserably at all it's intended and designed functions. That's why it was replaced with the A2 version. After reading all the posts here, it appears that the A2 is not any better than the A1. I need a reliable interface between all my computers and the internet, I don't have the time or inclination to make this router a full time hobby.
I figured that if I could use it as a wireless bridge for my TV, my $200 investment wouldn't be totally wasted. In the end, it looks like a total write-off. Lesson learned.
D-Link should recall all the DGL-4500's, they have never functioned as advertised. You have to turn off many of it's advertised features just to get it to work for short periods of time before a reboot is necessary.
D-link should man-up and do the right thing. They can start by removing FW ver 1.21NA from this website.