Security Alert problem when using PayPal from the UK

At the point where PayPal returns me to the Manifesto site to complete the purchase, I get a couple of security alerts.

'You are about to be redirected to a connection that is not secure'

'The name on the security certificate does not match the name of the site'

I clicked OK to continue because you have an honest face ;)

The transaction went though smoothy otherwise, and I can't rule out the possibility of the problem being at my end (security settings, IE version etc) but I just thought I'd let you know.

Cheers

- Graham

PS for the record I was using IE6 vSP2, with 128-bit cipher strength.