My primary computer running Win7.1 and IE8 with Trend Micro has no issues with PPRuNe, whereas the back-up running Win8.1u1 and Firefox with MacAfee keeps flagging up 'unsafe' IP warnings. Which, when checked, all emanate from the USA.
Probably because of all these wretched adverts.....
UPDATE The problem seems to have been fixed over the last day or so....
I think...