problems with nwfusion.com

I run Squid 2.2Stable4 on RH Linux 6.0. It has been running for several
months with no problems. Today I tried accessing:
http://www.nwfusion.com/columnists/2000/0306helpdesk.html and I got a
squid error at top of page:

The requested URL could not be retrieved

While trying to retrieve the URL:
http://ad.doubleclick.net/adl/idg.nwfusion.com/;loc=rm;ord= 8141628

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

Does this error occur without Proxy use? what can I do? thanks.

-- 
Fernando Medina Jr.
<fmedina1@dla.co.cr>
ICQ 102329
San Jose, Costa Rica