Problem with href

[Andrea Bertucci]

Hi,
I've a trouble with jsp pages.
In every page I've some links (href); when I click a link and, before
the corresponding page was loaded, I click another link tomcat raise the
following exception:
"java.lang.IllegalStateException: Cannot forward as OutputStream or
Writer has al ready been obtained
at org.apache.tomcat.core.RequestDispatcherImpl.forward ..."
How I can avoid this?
Thanks,
Andrea.