Options Menu corrupt

I’ve got a strange problem:

If I activate more than one plugin (e.g. photopress and wp-cache), the generated links in the options menu for these plugins all lead to one menu entry (e.g. wp-cache).

Therefore I have to activate only one plugin for changing it’s properties, deactivate it… activate a different one… change it’s options, …
…at the end of this process I activate all plugins I need.

This is a little bit annoying!

Does anyone know a solution?