bigtoga - 1:13 pm on Jan 16, 2013 (gmt 0)
Over the past week, I've seen specific and repeated "attacks"/"scrapes" (whatever they are) by this UA. It works like this:
1) IP comes to site and hits the same page 10 times in < 5 seconds
2) A few hours later, a different IP in a different part of the world comes to the site and hits a different page 10 times in < 5 seconds
This happens again the next day with yet another set of IPs/pages. It's been repeated for a week at least recently.
IIRC, I had the same thing happening from April - May last year and then it just stopped.