Ok, cool! Just to be safe, I commented out all the ExpiresBy lines. I don't seem to have as many issues as before, but I'm still getting the redirect issue in IE if I view the Welcome tab and then follow a link from the facebook wall to RidePros.com. If I'm logged out of facebook, IE enters the redirect loop and eventually times out. Here's the final URL that comes up after the browser times out and shows a 403 error: /index.php?Itemid=322&option=com_content&view=article&tmpl=component&id=358&jfbcCanvasBreakout=1
If I'm logged into facebook, I don't enter the redirect loop in IE, but instead get redirected to the Reveal article: index.php?Itemid=322&option=com_content&view=article&tmpl=component&id=358
This issue seems to happen for about a minute or two after view the Welcome tab. It also happens with either Atomic or Gantry selected as the Tab template. I just tried this same sequence of events in Firefox 9, Safari 5 and Chrome 16. Each of these browsers tried to redirect me to the tab Reveal article, but after a second or so, redirected me to the homepage URL:
www.ridepros.com/
Do you think the Expires tags causing most of the issues? If so, maybe we could try reloading the "stock" JFBC 4.1 and see if it works as intended. Not sure if that would help, but I just wanted to throw that out there as an idea.