post workout is a MUST!!
all other times you listed are not essential. IMO it is best to get the majority of your protein from a whole food source rather then relying too much on protein supplements. they are a convience when real food is difficult to get in.

All the above.
And yes whole foods should be the choice for a minimum of two of your five-six meals a day, but that is not always possible.
You do want a quick releasing protein (whey) as soon as possible after your workout, and a slower releasing one(casien based) at bedtime.

thanks, Old Guy, atherjen

Post wo, ok.
But even first time in the morning is a very good time for some whey pro.

1) in the morning is perfect since u are probably catabolic after sleeping all night so a good quick digesting protein such as whey to flood the bloodstream with some amino's is perfect
2)not really necesarry imho and there is more to support a shake during a wo than pre wo, have some real food pre wo imho. just make sure to get protein and some cals in the pre wo meal
3)post wo is a must imho, ur body is screaming for nutrients pst wo. some whey post wo is ideal!!!
4)before bed do not take whey but rather something slow digesting to last u through the night. look more along the lines of cassein, cottage cheese, nuts, peanut butter and flax!!!
hope this helps
peace
j