Great.. now mine is doing the same thing...

In my case I managed to fill up my removable sd card 100%... I tried to remove some things from the internal card and re-format it so that I could move some files from the removable to the internal...
The tablet would not format the internal card , said it was "in use" so I tried to reboot..

Got this endelss loop flashing NOKIA problem..
I tried removing the full remoavable card.. to see if the full card was causing the problem.. NOT...

Looks like a corupted file system on the internal card is causing it not to bood..
probably fschk taking too long and and internal watchdog timer rebooting the device before it is finished...

i'll try a reflash tonight...

Sigh...
I shouldn't let my tablet see what I am reading in these forums... it seems to emulate other peoples problems when it sees them :-)...
Hypocondriac tablet..