Karyn
I prefer to use FireFox, but don't want to have to go back to Version 5 to get the formatting abilities
You said it all just there, There is nothing wrong with the forum, it works perfectly in IE and used to work perfectly in FireFox untill they changed FireFox...
It is the job of a web browser to acurately display the contents of web sites. If it doesn't then it's not the fault of the web site.
What are you basing this statement off of?
It's always the developer's job to keep up with how browsers are working and walk that thin line of making things works more-or-less as intended across all of them without having things break down entirely.
It's the job of the website to work as intended across all current (and most legacy) browsers. If Cakewalk has outdated software that works poorly in 2 or more current browsers, it's time to update or move on to a forum package that works for the user-base.
I have to manually enter linebreaks in FF. It works fine if I do. It won't quote anyone's messages though. This is not the user's fault. I do not expect that everyone will know to do this.
I use Firebug in FF constantly for my job, so I use FF. Comfortable for me. It doesn't matter if you use Safari, Chrome, IE7-10.... it should work mostly as intended. If it doesn't, it's not the user's fault unless the user has a seriously outdated browser (IE7 is starting to get there).