The Dursley's and why Harry stays there...

[M. Barnett]

No: HPFGUIDX 19740

Here's my theory on why Harry always goes back to the Dursley's over 
summer break ... Voldemort can't find him there.  I think Privet 
Drive, perhaps just Number 4, perhaps the whole area has been made 
unplottable.  Of course, I could be proven very wrong, depending on 
what happens at the beginning of Book 5.  But it would make sense 
that someone, perhaps Dumbledore, worked a spell after James and Lily 
died when he knew that Harry would be going to the Dursley's.  It 
would explain why the DE's never came for him when he was still very 
small.  This theory also goes along with the Arabella 
Figg/animagus/there to protect Harry theory, which IMHO, is one of 
the best theories!

Michelle :)  <--- dumb, but happy muggle