I had 42 hits in Dec. on one site from 69.84.207.246 with that UA, but it did request robots.txt. It went on to ignore it and requested only html pages, no images or css. That is the entire UA: "LSSRocketCrawler/1.0 LightspeedSystems"
I ran a check and it shows: Arrival Communication, Inc ARRIVAL2-COM (NET-69-84-192-0-1) 69.84.192.0 - 69.84.207.255 69.84.192.0/20 Lightspeed Technologies ARRV-69-84-207-128 (NET-69-84-207-128-1) 69.84.207.128 - 69.84.207.255 69.84.207.128/25
wilderness
5:57 pm on Jan 13, 2013 (gmt 0)
Arrival Communication and/or Lightspeed Technologies 66.17.0.0 - 66.17.63.255 66.17.0.0/18