I’m getting this problem all of the sudden, too. I think it just started with the last W3 update. If I disable W3 it is fine. Also, if I manually go in and empty all of the caches it works fine, too. But, if I leave it alone for a few hours I will again get the the “Are you sure you want to do this?” message. Empty caches again — fine again.
I will disable the page and DB caches and see if that will keep it working over the course of the day, but really, if I do that what use is W3? Is it even worth keeping active?
I might first try just making sure the register page isn’t caching. I added “/register/” to the “Never cache the following pages” section. Not sure if that’s the correct syntax or not, though. We’ll see …
Help! I updated to 3.2 before I read about the 1.2.9 update. So, I’m getting the bp-forum error. Of course, I can’t go in and update that now. I tried clearing cache. Tried it in Firefox and Safari and same error in both. I’m using W3 Total Cache and speedymirrors so I imagine things are cached there, too. How can I clear it when I can’t get to the admin?