Just an FYI:
Ran my obligatory MS update and found that it had an optional MS-Signed driver for the DWA-652.  Gave it a go and can see no good or bad from the experience.  I had been running the DWA652_130 drivers before with no issue.
Old driver DWA652_Drivers_130:
ar5416.sys      1,268KB
D-link
7/23/2007
6.0.3.107
New Driver MS Update April, 2008:
Atheros - Network - D-Link DWA-652 XtremeN Notebook Adapter
Date last published: 4/7/2008
Download size: 350 KB  
Atheros Network software update released in April, 2008 
athw.sys   1,302KB
04/1/2008
7.4.2.105
Sure wish there were some sort of release notes that came with these MS updates.  Done a few searches and found the driver available via 3rd party sites also.  No release notes found from those sources either.
Regards,
Karl