I just tried to audit web site with w3af and i got bug report.I tried on laptop and desktop and on both i got bug report.Sometimesits report bug on start and sometimes later after couple of minutes.Her is report:

Traceback (most recent call last):
File "/pentest/web/w3af/core/ui/gtkUi/main.py", line 588, in startScanWrap
self.w3af.start()
File "/pentest/web/w3af/core/controllers/w3afCore.py", line 415, in start
self._realStart()
File "/pentest/web/w3af/core/controllers/w3afCore.py", line 524, in _realStart
self._audit()
File "/pentest/web/w3af/core/controllers/w3afCore.py", line 866, in _audit
plugin.end()
File "/pentest/web/w3af/plugins/audit/generic.py", line 166, in end
self.printUniq( vulnsAndInfos, 'VAR' )
File "/pentest/web/w3af/core/controllers/basePlugin/basePlugin.py", line 149, in printUniq
om.out.information( i.getDesc() )
File "/pentest/web/w3af/core/data/kb/info.py", line 103, in getDesc
desc_to_return += ' id ' + str(self._id[0]) + '.'
IndexError: list index out of range