jojy - 3:31 pm on Nov 7, 2010 (gmt 0)

I'd double check and make sure you don't have malformed syntax somewhere which is causing the bot to get hung up in some sort of black hole

What are you referring here? Problem in URL rewriting? The urls that google bot attached to this message are working fine almost all are paginated urls and they have right canonical link.

Did you make any changes since the time that message appeared?

No I didn't

Do you see an initial spike and then lots of spikiness afterward?

I see normal crawl activity during August to November. A little spike in the mid of Oct (time spent, kilo bytes downloaded and number of pages crawled)