Hi, and thanks for the quick reply. I do indeed run McAfee, so that is likely to be the problem, considering I can't exactly remember installing or doing anything that could have broken this. Just to get some clarity on your suggestion, you mean to say I have to entirely remove McAfee and replace that with a different anti-virus app? I have paid for McAfee, so that would seem a strange way to resolve the issue. Wouldn't it be reasonable to assume that McAfee should be bringing out a patch soon to resolve the issue?