Lots of website problems. May be Java problem.

Question

I will try to give as much details as possible.
1. Some youtube videos won't play.
2. Thumbnails won't show.
3Facebook won't load at all. All I get is the top toolbar. Can't see newsfeed, messages ect.
4.Omegle doesn't work.
5. On the website reddit, I can't log out.
6. I can't upvote or downvote.
7. I can't minimize a thread.
8.On some fourms I can't do more options like add pics.
These are the errors I get. http://i.imgur.com/1BSx9.png
I tried disabling ALL addons and plugins. I tried un-installing. I tried clearing cache. I tried clearing history. I even made sure javasrcript was enabled. The weird thing is, it's not only firefox.Chrome and IE do it too!
Help!
EDIT:Yahoo does not work either. I had to confirm on my phone

Answer 1

A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
Do a malware check with some malware scanning programs on the Windows computer.<br />
You need to scan with all programs because each program detects different malware.<br />
Make sure that you update each program to get the latest version of their databases before doing a scan.<br /><br />
*http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
*http://www.superantispyware.com/ - SuperAntispyware
*http://www.microsoft.com/security/scanner/en-us/default.aspx - Microsoft Safety Scanner
*http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
*http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
*http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
See also:
*"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked