Safari won't load webpages
Beginning about 10 days or more ago, just after the recent software upgrade, suddenly my iMac safari won't load half the websites I go to and others don't look right. I've done EVERYTHING I've found in support to fix the issue. Cleared caches, reset safari, software updates... I have NO idea how the proxy or other settings work under network in preferences but I've tried recommended changes, tested and then undid the changes when those didn't work either. I've deleted my only 2 safari extension, as well as half the plugins I recently installed on my self hosted server for blog testing, just to see if they caused problems.
Also the images for my widgets/plugins on my blog no longer show up, in any browser, on my iMac. I cannot access their websites either but I have sent each of them (scoopit, goodreads and Pinterest) emails asking if their sites are down or if there are any known issues.
I have endless probs now with iTunes updates because I'm American living overseas and now apple won't accept my new Visa card info (which precludes purchasing any upgrades).
Very frustrated. Seriously, there's nothing left that shows up on any support pages that I haven't tried (whether listed here or not). And authorized support in this country isn't so good. So what next??!
iMac