I have installed 'timingandestimationplugin 0.8.1' globbaly for Trac 0.11.5 installation (using command easy_install http://trac-hacks.org/svn/timingandestimationplugin/branches/trac0.11-Permissions/)(20.10.2010 - Revision 6773).
It seems like the component ReportScreenFilter? causes, that /report page is broken - in particular, the closing tag </h1> for heading is not printed (after text "Available Reports").
<div id="content" class="report">
This is a list of available reports.
This leads to invalid XHTML document and also the formatting is wrong (because all following HTML elements are supposed to be inside <h1> element.
When I disable ReportScreenFilter?, everything is OK (/report page looks normally).