msnbot visiting in pairs?

[bobothecat]

131.107.0.96 - - [20/Apr/2006:16:06:05 -0500] "GET / HTTP/1.1" 200 18526 "-" "Mozilla/4.0 (compatible; IE 5.5; Windows 98; Win 9x 4.90)"
131.107.0.96 - - [20/Apr/2006:16:06:06 -0500] "GET / HTTP/1.1" 200 18526 "-" "msnbot/1.0 (+http://search.msn.com/msnbot.htm)"

MSN IP's ... one with the bot UA... one without.

[wilderness]

This range (Class B) has a record of some shady practises.

[webmasterworld.com...]

There are a couple of old threads around the same date as above.