The "New Facebook" has a newsfeed setting that by default is automatically set to show ONLY posts from people who you've recently interacted with or interacted the most with (which would be limited to the couple of weeks just before people started switching to the new profile). So in other words, unless your friends commented on one of your posts within those few weeks or vice versa - you are now invisible to them and they are invisible to you!!
HERE'S THE FIX: On the homepage click the "Most Recent" title on the right of the Newsfeed, then click on the drop down arrow beside it and select "Edit Options", click on "Show Posts From" and change the setting to "All Of Your Friends and Pages" (you can also access the "Edit Options" link at the very bottom of the facebook homepage on the right)
The good news is: now you can now view all of your friends and fans again. The bad news is: YOU ARE STILL INVISIBLE to a large portion of your list. You must get the word out to ALL of your friends and fans by inviting them to this fan page or post one of your note / wall so they can read the post and adjust their settings.
Good luck
