Have a look at the Watch time for high loadings (sec) and Bad counts for Crawlers values in the preferences section of Protector. You may need to increase them. Have a look at this page for more details on that IP.

A Crawler is usually fine, but they can also be to heavy on your resources and become a problem. This is why you'll need to tweak those settings mentioned earlier.

2 Pages of logs ! You either have your thesholds set way to tight, or someone finds your site REALLY interesting.