bpresent - 2:09 am on Jul 12, 2004 (gmt 0)

I did have a look through and nothing stands out as being a sensis specific bot....
[added]
I had a closer look at the referrers this month (just using LiveWebStats or whatever it's called) and I can only find ask and G. Ask has not picked up the new pages yet (as far as I can tell) so I can only assume that the results are from G using their own (or some other non G) algorithm.