I posted something here a while back when the Google Trends got "stuck"
that time too, along with posting a question about it in Yahoo Answers
and (I think) emailing Google Trends staff (etc), and someone DID 'kick
start it' at that time...
However I'm not sure which is the best method to draw their attention
to this problem... although you'd think here WOULD be the best place.
I'm also waiting for it to update with new data since November 15th
stats as I find it an invaluable and insightful tool to play around