video card drivers up to date ? Yes.
Latest versions of the browsers ? Yes, I installed them, observed the problems and wrote this.
Disabled all unneeded browser plugins ? I had no plugins like, ever, I got this new virtual machine 5 days ago.
Cleared cache and or temporary files ? Virtual machine just created, nothing other than C2 is installed.
Did you run them firefox and chrome in paralel with windows ? or installed the macos versions ? Windows, there is no way to use Windows C2 with Macintosh browser.
Did your IT class firefox run the game normally ? (if it had it and you tried that) No Firefox, these idiots are stuck with IE7-8.