How do you manage that? Did you start with GNOME and then install KDE later?
I've always run Kubuntu and in 10.10 I get a KDE tray popup that says I have two options for the device. I can click the button in the far right to mount it, or anywhere on the device label to display a dropdown of my two options.
My two options are [a] Download Photos with Gwenview (a KDE app) or [b] Open with File Manager, which opens Dolphin.