CD - Covers not visible with Rhythmbox

Hi,
switched from Banshee 1.6 to Rhythmbox, because Banshee is not able to access my iPod. Rhythmbox is working fine, but is not able to load/show any CD covers, the CD-Cover plugin is installed and activated. I don’t found any thing to configure or to start?

Thanks!
Thomas

Using: OpenSuse 11.2, 64 bit, Rhythmbox 0.12.5