Should it look like this? It looks like there's a black square behind the device image.
If not, it's probably related to #7422.
Windows 7 Ultimate 64bit
AMD Phenom II x4 940 (3GHz)
ASRock A780
4GB DDR2 333
ATI Radeon HD 3200
Library on two disks : Western Digital Caviar 1.5TB - WDC 640GB
Yes, same thing. I thought it could be related to a particular skin but I tested on several and it's the same on all of them.
Windows 7 Ultimate 64bit
AMD Phenom II x4 940 (3GHz)
ASRock A780
4GB DDR2 333
ATI Radeon HD 3200
Library on two disks : Western Digital Caviar 1.5TB - WDC 640GB