This was a totally kick-ass update. Harry so typically charges in without thinking when he feels his loved ones are in danger. Perhaps this will help him to realize that its better to think first. (Then again, this is exactly probably not - its really just a part of his character I think.) At least he spared a brief thought for Draco, even while trying to elude him.
Wow! That's all I can say about Harry's fight with the snake. He was absolutely awesome! I loved that spell - making the snake a living weapon - against itself was brilliant. With so much going on, though I'm starting to wonder just what condition Hermione and Ron will be in when he does find them - or whether Harry will have to ultimately sacrifice himself to get the others out. (The thought of willing sacrifices really sticks in my mind for some reason. And we already know that Harry will give the ultimate sacrifice to save those he loves.)
Great update! Wonderfully, gruesome, captivating story.