evolution-data-server's ABI changes from 1.0 to 1.2 I'm disabling gnome-panel's e-d-s integration for now. Apparently upstream uses e-d-s-1.2 This bug is a reminder to re-enable e-d-s integration when that version gets pushed. (In theory we could make things parallel-installable, but ultimately we have to decide on which packages to support for a particular release of the product)
Adding to FC4 tracker
This looks like its enabled again in rawhide. At least 2.9.90-2 requires libedataserver-1.2.so.0