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They were under Tools --> Set Crawl Rate (or was it called Crawl Stats?), and that was the place where you could also tell Google to slow down on crawling your site.
The graphs have now been split off into their own "Crawl Stats" section under Statistics, leaving the other related settings in the original "Set Crawl Rate" option under Tools.
The graphs also have a new format, and the data seems slightly better presented.
Not sure if it was a bug, but back when the website I was working on at the time only had one page, Google WMT reported anything from zero to four pages per day being crawled in those graphs. I didn't have access to the site logs to see if it was simply Google taking the same page multiple times per day, or not. Have other people seen that effect?
There are now division lines between each month on the graph. This makes it easier to guess the dates for each point on the graph to within a day or so either way.
I'm not so sure that the PageRank information should be on the same page as the Crawl Stats (it is currently under those Crawl Stats graphs). Maybe the PageRank information should have it's own page?
However, I have just gone from having several minor problems listed, to having none, so it might just be that today's date is printed on screen for the reports when there is nothing to report.
It would be interesting to see if the date appears, and how often it changes, for a site that does have problems to report.