Hogwarts protection spells

[fanofminerva]

No: HPFGUIDX 135273

--- In HPforGrownups at yahoogroups.com, CariadMel at a... wrote:
> 
>  
> Geoff wondered if the spells cast by DD  to protect Hogwarts would 
be invalid 
> after his death....he said, 
> "My feeling on this question of the caster's death ending spells 
is 
>  that I wonder whether this applies only to spells cast on a 
> particular person, i.e. ones such as Petrificus Totalus, Imperio 
etc.  
> whereas a "general" spell such as that maintaining protective 
wards..." 
> 
> Annette:
> The spell that doesn't allow for Apparation in Hogwarts was 
probably cast the 
> same time as the anti-Muggle spells, ie.long ago, much longer than 
DD's 
> existence. It's purpose is to protect the students from the 
outside world and , to 
> a certain degree, stop them 'mitching' (bunking off) during school 
time.
> 
> Annette.


I had wondered the same thing about the protection at the 
Dursley's.  (See post "Danger at the Dursleys!!!")  Some thought 
that this was a different type of spell and it would last after his 
death, and they equated this with Lily's protection after death.  I 
see one problem with this equation.  I think that JKR implied in her 
recent Mugglenet/TLC interview that Harry was protected because Lily 
chose to die...no real charm that she cast.  

Also, if DD's charms are still in place, then that would imply that 
magic from other deceased wizards must also linger.  One possible 
example I can see is the Sorting Hat, but we don't know all there is 
to know about this yet.

I do not think the diary/other horcruxes apply in this discussion 
because LV never died.

Other than the Sorting Hat, do we have any canon evidence to suggest 
that magic of a deceased wizard lingers?

Julie