Lagging indicators

It’s now more than a week since I moved this site and updated the DNS, and the site is still getting in the order of 20 hits per day at the old IP. I was a bit puzzled, until I checked the access log and saw the user agents: “Mozilla/5.0 (Slurp/cat; slurp@inktomi.com; http://www.inktomi.com/slurp.html)”; “Googlebot/2.1 (+http://www.googlebot.com/bot.html)”; and the request “GET /scripts/..%c0%af../winnt/system32/cmd.exe?/c+dir+c:\ HTTP/1.1”. I guess I can safely take down the old server after all.