I hate to break it to you, but this (and by “this”, I mean the OP) is actually the 7,205,105th post. Maybe look back and see if anything extra-scary happened around half a million posts ago?
On the main forum view it showed 6,686,665 total posts when I posted. (now it’s showing 6,686,826)
Are posts deleted after a while? Looks like you’re doing something fancy with the address bar to determine it - I’m looking at the total number of posts - but if some of the oldest posts are no longer on the server, that would explain the discrepancy in our figures.