Although I log in most days of the week and my last log in was yesterday, Flyertalk today thinks I last logged in back on Jan 4th this year.

As a result, I've got loads of subscribed threads appearing as changed when they haven't been posted to since I last logged in, and a message inviting me to post as Flyertalk wrongly thinks I haven't done so for a long time

Has Flyertalk restored an old version of a file or something?