If you encountered this same problem as mine, then you likely installed a plugin that causes this bug or malicious code. I’m not pretty sure what it is, but it’s really annoying. Firefox automatically loads this page each and every time I open a new tab or a new Firefox browser.

This happened after I installed that Yontoo Layers plugin for Firefox. Yontoo Layers is a plugin wherein you can customize your Facebook’s layout. You can easily change the theme or layout of your Facebook account once this plugin was installed. The only problem with this add-on extension will also force you to open wac.0952.edgecastcdn.net with a Google Custom Search for in it.

This is not dangerous, but it’s annoying, really. Just uninstall your Yontoo Layers Firefox Extension, restart your Firefox, and everything will be back to normal.