Bill, I believe that the appointment of Directors...
is more critical than their resignation... The appointment is usually done by a vote of shareholders, while the Directors are free to resign, should they feel it's appropriate...
I don't know if this is considered a material event requiring an 8K Filing, like in the case of a change of Auditors... My guess is that it probably depends on the circumstances of the resignation and the number of Directors resigning at the same time...
BTW, an 8K was filed today concerning the resignation of McBride as CEO and Chairman of the Board of Directors...
JMHO, F. Goelo + + +