I tried it a couple of days ago. After logging in to my Firefox account so sync my bookmark and extensions, spend about an hour configuring all the extensions the way I want then logging in to all my favorite websites and forums. The next time I launched it, it seemed to have wiped the profile and just started all over from scratch! POS software! I used the portable version by the way in the hope of finding something slightly better and faster than Firefox but nope, it is not faster in any way when browsing/loading websites, only a bad buddy piece of junk.