Embedded ads are the norm on tinterwebs and Safari should work with the internet, not the other way around. So did you use a proxy ad blocker? Admittedly if that's the problem then it should work, but we shouldn't have to employ workarounds for such a basic and essential part of smartphone life.
I see a spinning data wheel on most if not all websites I frequently visit, and this cannot be a bug with the majority of websites. It must be a bug within Safari. It's a shame because most of 8.2 is an improvement and I can't fathom why they didn't fix Safari.