I purchased my new iMac 3 weeks ago (after my macbook pro crashed). I tried to wait for iHospital to provide a quote for a new logic board on my old macbook pro, but after waiting 5 days, I couldn't wait any longer. I was contracted to provide images to clients and I had to break my contract and offer them discounts to keep them from suing me. I own a photography business and the mac was needed to continue my editing, sneak peeks, web uploads, etc. As soon as I got the computer setup I tried to go on facebook... Nothing.... I tried again... still nothing. This was using Safari. So, I downloaded firefox and tried again... Still nothing.... Google Chrome... Nothing... Opera... again NOTHING! It is important that I have access to facebook for business purposes as that's where I post client sneak peeks, offer discounts, etc. I thought the problem was only with facebook, but i've been corrected... I have problems uploading images to my business website. It will upload about 90% and then it just stops. It doesn't matter if I wait 10 minutes or 10 hours. Images will never fully upload. Also have problems uploading to my client viewing galleries. Prior to my new computer, I could upload anywhere from 20-30 low-resolution images in about 5 minutes. The most recent upload attempt of 26 images took me 10 hours, and at the end not all of the images had actually uploaded. I attempted to upload the last remaining 5 images at my day-job, and they uploaded in no more than 1 minute. Talked to apple for 90 minutes on Saturday. They are unable to diagnose the problem, but believe it to be the firewall from my isp. Talked to my ISP (att) for 45 minutes last night. They tried to tell me it's my computer firewall (which is highly unlikely given it was never turned on). So then they try to tell me that I need to try accessing facebook with another computer. I told them 5 times I'm able to access facebook with my cell phone and I'm able to access from my day-job computer (i work at a big university). So then they try to tell me that I need to contact facebook directly. Um, that's not happening. They have no phone # to contact tech support and they NEVER respond to emails submitted when reporting a problem. I'm over all of these companies pointing fingers at each other. Like I said, this issue spans across multiple browsers. And I'm at my whits-end given that I bought the computer for business purposes and can't do about 75% of what i need to do online to promote my business. Please Please Please! Can somebody provide any insight? Is it my mac? is it my ISP? I'm just so over all of the issues!!!