Well, I have discovered it is not stock layout. Someone has decided to "customize" it so that I am notified about private messages via my browser status bar. This only works in ie, as far as I can tell, and is not necessary because the standard location of my pm status is still where it normally is, in the upper left corner of the header, below thje logo.
The back button does work when using firefox browser, but I prefer ie. The stock forum software works the same on all browsers, with only minor graphical differences. You have to mess with the coding to break it like this. It's too bad because there are a lot of very good "hacks" made for the software that add many nice functions and design enhancements and there is great support for them online to eliminate any problems.
After a day, i'm wondering if an admin or moderator will even reply to this.
oh yeah, turning html on doesn't help if the software doesn't preserve text formatting. Posting images is chancy at best because of the same reason.