Trying to access en.wikipedia from the UK fails. Other wikipedias are OK.
Error message (extremely helpful):
ERROR
The requested URL could not be retrieved
While trying to retrieve the URL:
http://en.wikipedia.org/wiki/Template:GeoTemplate/Group
The following error was encountered:
* Access Denied.
Access control configuration prevents your request from being
allowed at this time. Please contact your service provider if you feel
this is incorrect.
Your cache administrator is nobody.
Generated Wed, 25 Feb 2009 19:48:16 GMT by
knsq11.knams.wikimedia.org
(squid/2.7.STABLE6)