mattglet - 12:59 pm on Feb 26, 2005 (gmt 0)

I would say your best bet is not to turn off IMS, but actually to use it in your favor. You should look into some functionality that alters the IMS to "Now" or "a few minutes ago", so any bot that looks, will see the modified date to be very recent. This will hopefully entice them to crawl your pages, and you would get your 200's back.