Is it something with my setup of has Google borked its groups interface?

If I try to follow a link e.g. to the Google groups interface to uk.d-i-y
http://groups.google.co.uk/group/uk.d-i-y/topics instead of getting the
group I just get a page saying

Google groups

Create and share with groups of people

... blah blah ...

and an invitation to "Sign up to Google Groups with your Google Account"






--
John Stumbles

My karma ran over my dogma