This is a Dell Vostro with the 1510 card (Broadcom 4322AG).
Windows 7 x64. Latest driver that I'm aware of (5.60.18.

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Negotiates at 270-300. No problems there. Ten feet from the 655.
Running latest 1.32 beta 9
When copying a file off a computer I get between 2 and 3 MB/sec. This computer is connected wired to a port on the 655.
I had another laptop that had intel 5100. Speeds were much better.
So is the broadcom junk, or is there some incompatibility between it and the dlink?