Firefox update

when using FF i get an update notification to update to latest version. Can I safely update or should I let it be.
And how can I enter a questionmark with the mobile air mouse
otherwise very happy with the atvflash…

I have updated a couple of times without any problems…have also installed s few “add on”…no problem;
As for the airmouse, cannot comment cause I use keyboard and mouse which seems to work fine.