There is no error message.

It started yesterday (Tuesday). I was out all day and the software updates Panda automatically several times a day.

There is no error message, and as soon as I disable the relevant part of Panda, all is fine, so it's not the browser (IE6). I thought it was the Mudcat down until I discovered that the other computers on my network could get on to the cat. Then trial and error with Panda narrowed it down.

I can't find any "allow site" feature in Panda at all, which seems odd.

The "unsafe access" is described in Panda as being a security feature.