This isn't cache-related. I was able to reproduce it on iPad Portrait. Will let you know when we've pushed a fix. Sorry about that, we didn't see this in testing.
Apparently messages are no longer html links in the search.........boards still are.......but not the actual messages..........so I guess you changed that to javascript..............sigh...................Z
The more surgical approach to specific advfn/ihub cookies IMO is the best way to go. No reason to clear your passwords and info to totally unrelated websites. Although maybe a lot of cookies are set via your website that advfn/ihub have nothing to do with.
Even when logged in here, I'm not sure how a website can totally encapsulate members from cookie monsters.
There's just sooo much damn stuff going on behind the pages just to get the site to work with all the formats and browsers it's amazing.