for (TSET_IDS::iterator it=setUsed.begin(); it!=setUsed.end(); ++it)
{
	// check if only used in one context or if we
	// are about to delete this context.
	const TSET_CTableContext &setContext = mapUsage[*it];

	// We count how often this context is in use by the 
	bool bUsedOutSide = false;
	for (TSET_CTableContext::const_iterator it=setContext.begin(); !bUsedOutSide && it!=setContext.end(); ++it)
	{
		if (it->m_lIdAS!=m_context.m_lIdAS ||
		    (m_context.m_lIdPJ!=0 && it->m_lIdPJ!=m_context.m_lIdPJ) ||
			(m_context.m_lIdRL!=0 && it->m_lIdRL!=m_context.m_lIdRL))
		{
			bUsedOutSide = true;
			break;
		}
	}
}