Firefox display problem

[Marco]

Hello,

I have just switched to kubuntu. Firefox seems to have a problem:

Sometimes when I change to another page e.g. via a link firefox loads the
page but does not display it. It displays it just for a moment when I go to
the next page. So the workaround is to go back and forward again to have
the page displayed. This problem comes and goes randomly.

Is this a known bug? Can I avoid it?

Regards,
Marco