Everyone try this. I have had similar problems to all of you and this seems to have fixed everything. 1. Go into your router's administration page and find your DNS server(s). 2. Open up Network Preferences in your System Preferences window. 3. In the Advanced section, click on the DNS tab. 4. Manually add the DNS servers you looked up in Step 1. Hope this helps! (after hours of trying to fix this, reading different forums, I found someone who had a working answer.) Immediately after following these instructions everything is working 100%. Let us know how it works for you!