Here's my effort from last night:
2010 Sep 30, around 0240 UT. It's a crop of the centre of the frame. Canon 40D, 50mm, 30 x 10 sec @ f/1.4, stacked in Deep Sky Stacker.
The distinctive green colour of the comet is obvious in the image but it's hardly a conspicuous object ... the moon didn't help, but it was a just about suspected fuzzy blob in 9x50 finder and not much better with 80mm x24.
Really need a new tri-pod as you can see the camera shake
I had that issue once. Turned out the concrete slabs of the patio the tripod was standing on were moving very slightly when I walked around.