Need help: Why am I getting a 403 Forbidden when posting to LinkedIn?

Every other social network posting works fine but recently I get this error when posting to LinkedIn. I have looked all over the internet for a solution including the LinkedIn forums. Seems like a lot of people are having this problem with LinkedIn and many are solving it in very different ways. I attempted to disable my CDN, I checked the .htaccess file and even removed some the advertisements but to no avail. I am running WordPress 3.9.1 with all plugins updated to the latest.

Any help is appreciated!

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Here are the plugins I currently have enabled on this site:

  • Akismet
  • Amazon Reloaded for WordPress
  • AntiVirus
  • CDN Linker
  • Download Counter
  • Download Counter Chart
  • Easy Technorati Tags for WordPress
  • Image Gallery Reloaded
  • ImageMagick Engine
  • Jetpack by
  • Lightbox Plus ColorBox
  • Mobile Gallery
  • Technorati Full Feeds
  • URL Shortener
  • WP-Stats
  • WP-Stats-Dashboard
  • WP-SynHighlight
  • WP Missed Schedule
  • WP Super Cache
  • Youtube Feeder