Well,
these versions should work correctly. In that case, I belive there is either some conficting piece of code somewhere or JoomSEF is not fully enabled. - I assume you do have the needed SEO opions in Joomla global configuration ON?

Maybe you could paste here the seo version of the problematic link + original (non-sef) URL.
Also, do you use JoomFish?

Hi Jan,
thank you very much for your help. The SEO setting in the joomla global configuration is "on", yes.

the non sef url is: www.sound-ecke.de/index.php?option=com_m...album&Itemid=171
the sef url: www.sound-ecke.de/alben-artist/f/freunde...-allstars/en-directo

i dont use Joomfish.

A few days ago i delete my global keywords and description and now one link in google shows now the correct description. But other pages are not correct like the page above.

Seems it is com_muscol component.
What JoomSEF extension are using for that one? I belive the issues could be then related to the extension.