I had the same issue yesterday.
Post #436 is from me, yet is has me as zoejones86
Whenever I clicked on "my account" my info was there but on every other part of the website, each time I refreshed the page I was a different username.
I am a web developer and I think I know what the issue is,message me if you have any questions.
My suspicion was kind of confirmed when changing my password and logging back in resolved the issue.
Thanks noted, we know the issue, just trying to identify who its still happening too-Baja