Firefox 'loading' problem

I have Firefox on both of my computers, portable and stationary. When I sit at my laptop and browse the Web, so has the need to be standing in some specific pages or just "loading" them constantly. It also has strange errors when I try to magnify an image from google.xx during Gallery to write "the image could not be loaded" or "image does not exist". Firefox refreshes many times also pages if I switch from a link via the tab.

I've tried to erase and install it, on many occasions.

Hmm you say the it refreshes constantly...hmm??? Do not know what the problem is but it does if you press Ctrl + R.

and your google image problem: there I think that the fault lies in google.