Any question answered...

Does anyone know why I'm getting an "Untrusted Connection" page when I attempt to visit Gmail? None of my browsers allow me to visit it. It's on the work computer so people shouldn't have visited anything dodgy. I have run a virus check and it came up blank.

It's not essential but it is tedious and I don't like things like this.

There may be a transparent proxy server at your work that is terminating your SSL connection and then proxying off the request to gmail. Check the certificate that you are getting when attempting to visit gmail for more details.

Also worth checking what gmail resolves to. Many workplaces will change popular sites to be that of internal servers for 'security' reasons - so that they can monitor your activity.