I am having Firefox Portable 3.5.1 on Windows XP Professional. I think that the portable version uses a lot more bandwidth in comparison to the normal version. I am to sure about it. I had been using Firefox normal version till some time ago and was ok with my 1.5 GB bandwidth per month but as I moved to the portable version, 1.5 GB appear to not enough although my surfing habits have not changed.

Can any body give any suggestion in relation to this problem?