Gleam in Dumbledore's eyes

[twoplus3 at juno.com]

No: HPFGUIDX 30535

I know this question has been discussed at length, but there is 
something I picked up on last night while re-reading SS (again).  In 
GOF, Harry thinks he sees a gleam of triumph in Dumbledore's eyes 
after he learns that Voldemort took his blood.  In SS, Dumbledore 
tells Harry that his mother's protection was "in his very skin."  
Could this mean that Dumbledore knows that the protection was not in 
his blood, as V. thought, but in Harry's skin instead?

I'd be interested to hear what anyone else thinks of this.  It is the 
first time I noticed it.  If it has been brought up before, I 
apologize.  But I haven't seen it anywhere else.