Happens with me too.
I installed Firefox 2 to work.
2008/5/14 Stephan Bardubitzki <stephan_at_bardubitzki.com>:
> Hi,
>
> Ubuntu 8.4 chips with Firefox 3 Beta 5 and pages developed with NB 6.1
> Visual Web have a rendering problem. At the first attempt nothing is
> rendered at all, only after hitting the "Back" button the pages are
> rendering well.
>
> Glassfish log output:
>
> Unable to set request character encoding to UTF-8 from context /mobitec,
> because request parameters have already been read, or
> ServletRequest.getReader() has already been called
>
> The same pages are rendering well on all other browsers I have access to:
> IE and Firefox 2 on WindowsWP, Firefox 2 and Safari on Mac OS X 10 when
> using NB 6.1.
>
> Stephan
>