Race conditions, they're everywhere

Ever since I added an SSD, once in a while, gnome2 won't be able to load a random panel applet on login.  (It was a dual-core system until the slow death of I/O interfaces on the motherboard finally consumed SATA, at which point I replaced it with a quad-core board.)  That means that every now and again, I get an error similar to the following:

This OAFIID is actually relatively transparent.  Sometimes, I get ones that look more like a UUID and I ask the dialog, "How does that give me any information?"  There's not even any indication about what the error was.  (It is floating around in ~/.xsession-errors, with the helpful indication that the child didn't return an error.)

Fortunately, the answer is always the same: Don't Delete.  Things will most likely work next login.