XF 1.4 Suddenly, the visitor count is wrong

All of a sudden, this morning, my member/visitor/robots count dropped to 1 (me). I know that others are on the site because I see them posting. Google Analytics real time shows something on the order of around 200 on the site (www.immigration-information.com) at any one time. Has anyone else experienced this?

I haven't touched anything on the site (other than posting) in weeks.