Symantec Endpoint Protection blocking Okcupid website

In approximately the last week the Okcupid website will not load unless I disable Symantec Endpoint Protection on my home desktop PC. My notebook running the same OS (Win7 Ultimate SP1) & SEP 12 version is not effected. I cleared cache/cookies/history on both Firefox & Chrome browsers, ran full scans with SEP & Malwarebytes' Anti-Malware the later found/removed PUP.Optional but this did not resolve the issue, this to my knowledge is the only site effected & I'm out of ideas on how to resolve this.