Yes, I've had this problem with gmail. Most, but not all, of the emails from FAQers sent via the forum are going into my Junk/Spam folder. This started about 10 days ago.
I posted a message about it, but at the time it looked like I was the only one: http://www.bmw2002faq.com/component/option,com_forum/Itemid,50/page,viewtopic/p,898751/
Ben