Maybe?.......But It means I can go to work with my usb stick and use a proper browser on work machines instead of slow old IE.
Install ffox and carry on your portable usb drive... http://johnhaller.com/jh/mozilla/portable_firefox/
Update: I'm using this and it's great! Must pick up my profile or something, because it started with all my settings and bookmarks etc. A couple of extensions were not compatible though. I thought it might be slower..operating off the USB stick, but it was just as fast!