What ho one and all,

We have three desktop computers. Two are running XP Pro and Firefox 38 ESR; the other is W7 and FF38ESR. On all of them, I have uBlock Origin installed as a FF add-on.

Sometimes I want to watch something on Channel 4 catchup tv (UK) and on my computer, I always receive a 'We have detected you are running ad block software. Please turn it off' (or words to that effect.) If I disable uBlock on my computer (XP) I still receive the same message and cannot watch. On my wife's computer (XP) with uBlock off, it works and the same with W7.

Why would this be happening? How can I watch on my computer with uBlock off?

Toodle pip and thanks,

Rex