proxy abends on http://football.fantasysports.yahoo.com

Has anybody else had this problem?

NW6+BM37 patched up with everything we could throw at it

Last week we started to get abends on the Proxy, but nothing we did
could stop it. So I started matching the abend times with log files
and found http://football.fantasysports.yahoo.com there everytime the
proxy abended. So I fired up Internet Explorer and went there and sure
enough we got another abend. Everytime I hit the refresh button I
would get another abend. (and I thought arcserve was the only way to
abend the server on demand...)

I fixed the problem by putting fantasysports.yahoo.com in our
blacklist, but I am curious why this is happening.