what happened???

Just for the record.....I have been getting logged off for the last few days every time I left the site........... every time I had returned to the site it wanted me to log in again.....and I had checked the box to keep me logged in....Never had this happen before......So I did what Joey suggested by unchecking the box "Use the rich text editor to create and edit messages" on his link he provided and I have not had the problem since.....I am on a desktop PC running Windows 8.....If that is what anyone is wondering