Firefox and USB stick

[anon_private]

Hi,

I expanded FF - 3.6.8 for Linux on to a USB stick.

I am running this programme in concert with UBUNTU LiveCD.

It works well, but someone has told me that running FF from a USB has
security implications.

Since I use this arrangement for banking, I would like another
opinion, and possibly an explanation.

I have not installed UBUNTU because I only use it for banking.

I use FF from a USB stick so that I can update it.

Thanks.