gpk-application Not Working

I recently had this problem with the gpk-application on a Fedora 9. This Gnome application allows you to check what you have installed and install/remove packages.
The thing was I could not see the groups of packages and update the list from a remote machine. It happened I found out the cache was corrupted and this command:

> yum makecache

restored it to its full functionality.
Almost. I still cannot remotely refresh the list (which I could on the local display) but I think this is another story... permissions maybe.