A similar thing has occurred in the past with Yahoo's very aggressive Slurp crawler. I've heard the crawler would often create miniature denial of service attacks on some small websites with shared hosting plans.
Windows Live should be robots.txt compliant. Try this:
Code:
User-agent: msnbot
Disallow: /
Crawl-delay: 10
This should stop Windows Live from indexing your page.
Edit: Here is a useful FAQ made by Microsoft:http://search.msn.com/docs/siteowner...Indexing.htm#D Try the robots.txt examples they give you there.