Okay, I wasn't going to say anything, but it is kinda grating on my nerves, mostly just 'cuz I really like my skin (season eight). I read that logging out, logging back in, and then going into Edit Options and choosing the skin helps, so I tried that. The first time I tried it, after I changed the skin and saved it, I logged out and logged back in and it went back to default skin. (Normally I don't log out and in -- I just let it "remember" me.) So I tried again today, and this time I didn't log out. I've been on here a good chunk of the day without logging out or leaving the site, and my skin stayed on until it suddently changed when I was moving about some threads. It went back to default, which I think is the 10th anniversary skin, which I don't particularly care for. I like my black-and-blue.
*sigh*
I'm using IE6 or whatever you call it.