TV's Frink said:
Out again all last night. This morning it was out until I cleared my cache on my phone. Seems like the cache thing works for a while, until it doesn't work and I have to do it again.
And I haven't been able to get on with my PC in who knows how long.
Switch your DNS servers to google DNS. ( I can't send the link because I'm on a phone, but search "using google DNS") This should hopefully fix it.