I just upgraded the kernel to v3.1.0.1391.g26dd3-DEVELOPMENT and rebooted. I then logged into KDE. I got a window saying that Nepomuk Stub had crashed, which hadn't happened before (I see a window saying that Konversation crashes, when it's been running several days). A few seconds later, while my browser window was reloading its tabs from last session, the computer froze. I rebooted with the power button and the exact same thing happened.
I then tried booting the old kernel. When it tried to initialize the network, I saw the same sort of nonsensical interface names as when I booted the new kernel (for fixing the hosed filesystem) wiht the old world. I have succeeded in logging into XFCE, so I have a useful GUI, but the start button is missing. Pierre -- Jews use a lunisolar calendar; Muslims use a solely lunar calendar.