I've recieved a similar error but I can't think of why it would be connected to the cause that I've tracked down. When I load the orinoco_pci drivers for my NETGEAR PCI card before I start X, I get three messages like:
Details: Unknown CORBA exception id: 'IDL omg/CORBA/INV_OBJREF 1.0'
One for the pager, one for the Application bar and one for the clock.
If I start X, then load the wireless drivers I don't get this messages.
Maybe this is related to your problem?