Brief article reiterating the problem to date is found here.
For five years, the Pentagon has assured veterans and their families that there was nothing to worry about. But some 90,000 vets have reported some mysterious symptoms. While the initial report on the bombing of the munitions depot at Kamisiyah was circulated around defense department circles, allegedly no one made the connection between the presence of mustard gas and sarin and the symptoms for the Gulf War Syndrome. Defense Department spokesman Kenneth Bacon noted that the Pentagon was frustrated because it had taken such a long time to put the interpretation together. The article notes that the consequence of the sluggishness is the same whether the reason is a cover-up or benign ignorance.