WinTV Nova stopped working after reboot

Still on 2009.1.

Trouble with my new WinTV Nova DB USB adapter.  It had been working
fine with me-tv on a few Freeview channels but after a cold boot today
it was no longer accessible even though the system had detected it.
me-tv reports that it cannot find any DVB tuners.

[root@altair sys]# dmesg | grep dvb
dvb-usb: found a 'Hauppauge Nova-TD Stick (52009)' in cold state, will 
try to load a firmware
usb 2-1.3: firmware: requesting dvb-usb-dib0700-1.20.fw
dvb-usb: downloading firmware from file 'dvb-usb-dib0700-1.20.fw'
dvb-usb: found a 'Hauppauge Nova-TD Stick (52009)' in warm state.
dvb-usb: will pass the complete MPEG2 transport stream to the software 
demuxer.
dvb-usb: will pass the complete MPEG2 transport stream to the software 
demuxer.
dvb-usb: Hauppauge Nova-TD Stick (52009) successfully initialized and 
connected.
usbcore: registered new interface driver dvb_usb_dib0700

And according to lsmod all the drivers and support modules are loaded.

I have tried several reboots, with the device connected and
unconnected.  When connected the adapter light comes on and the
/dev/dvb tree is initialized.  Harddrake2 hung when I attempted to run
it.  Running hardware detection via mcc also hangs the program and
root cannot kill it.  Thus, the machine can read some of the hardware 
registers but must be expecting some kind of handshake or a ready signal 
or something and never gets it.  Something died?

Does this make sense to anybody?

Len