Since about February, I have managed a web-site that includes a link to an InvisionFree forum.

All went well until the last few days, when ZA suddenly decided not to allow me access to the forum. When I click the link, the result is now a blank screen with the single letter 'H' in the top left-hand corner.

The link is at

This computer is swept daily for viruses and spyware, and appears to be clean.

Can anyone help ?