firefox is offering to update itself, outside of the portableapps app. while browsing with firefox i received a notification window informing me to restart to update firefox. i allowed it to update itself and when it restarted it gave me an XPCOM error (couldn't load). i will reinstall to fix it, so no worries. just wished to inform you that firefox is updating itself (i have seen this on my laptop/other computer as well, but the laptop update was successful without the xpcom error).