Ok now it's not my environment. I have made no changes just the arc3 files and mzscheme372.
* I have only 3 posts and 3 comments, if I log in as admin and keep hitting the comments link - not crazily like, but right after the page load completes - about the 10th time or so the hyperlinks change format then the whole forum get locked and goes blank.
I am using mac osx.
After about an hour I'm getting the impression the forum is glitchy. There's just a bunch of quirky behavior like the above (pages are slower to load - page painting is noticeable.... etc etc)