You guys need to make adidxbot/1.1 (+http://search.msn.com/msnbot.htm) obey robots.txt
150 requests per second sustained is an attack.
Vince
CTO
SHOP.COM
Hi Vince,
Sorry for the delay. I'm working on this and will get back to you later today with our solution.
Many apologies,
Brett
Brett Yount
Program Manager | Bing Webmaster Center
Webmaster Blog
Vince,
I just received word that they fixed the bug that was causing this. If you are still experiencing issues, please email me at lswmc@microsoft.com
~Brett
Remember, don't post your personal information!
