[squid-users] addresses with underscores

G'day -
I run a small network for my residence at school, and lately, one of my
clients has been complaining about not being able to reach
http://j_zone.blogspot.com.

The error that squid returns to the client's browser is:

ERROR
The requested URL could not be retrieved

________________________________________________________________________

While trying to retrieve the URL: http://j_zone.blogspot.com:80/

The following error was encountered:

      * Invalid URL

Some aspect of the requested URL is incorrect. Possible problems:

      * Missing or incorrect access protocol (should be `http://'' or
        similar)
      * Missing hostname
      * Illegal double-escape in the URL-Path
      * Illegal character in hostname; underscores are not allowed

Your cache administrator is root.

Any ideas as to what the problem could be? I am running Squid
2.5.STABLE7 on my Gentoo firewall. Hopefully I am not asking a well
documented question, but if I am, please point me to the docs and
disregard my query.

Thank you!

Regards,
//John