Umbridge, dementors, spy in Order?

[corinthum]

No: HPFGUIDX 72461

Caroline asked:

> > ... it  seems a bit of an amazing coincidence that the 
> > dementors turn up 
> > near Privet Drive just as Mundungus Fletcher hears about some dodgy 
> > cauldrons...
> > So unless Umbridge is bugging the Order's HQ, presumably impossible
> > (from outside), how has she got this information? Is there a spy 
> > reporting
> > to Fudge and/or LV?
> > Have so far failed to come up with a likely candidate 

And Liz replied:

> I don't believe that Umbridge knew Harry was being watched, but I 
> know someone that I do believe knew that.  That person works at the 
> Ministry and got pretty close to Umbridge.  He also most likely had
> or had access to -- a load of cauldrons.  You see, he had spent a 
> good deal of time researching the thickness of cauldron bottoms the 
> year before.  Yes, Percy!...

> I mean, remember how driven Percy is for success.  He is desperate 
> and more than willing to ride on the coat tails of a "rising star" 
> like Umbridge...

> I really am rather 
> hoping for a bunch of posts explaining why it couldn't possibly have 
> been Percy.

Now me:

I'll try a defense of Percy.  Yes, he seems like an ideal candidate:
access to the Order through his family, access to Umbridge through his
job, cauldron expertise.  Not to mention his obviously
anti-Harry/Dumbledore/Order actions throughout OoP.  But I'm looking
more at what he didn't do.  He knows perfectly well that his father
and mother are working with Dumbledore.  Throughout OoP, Fudge was
desperate to track down Dumbledore's forces, and in all likelihood
would have rewarded Percy highly for that information.

However, Percy remained silent.  He didn't sell out his family.  He
didn't endanger the Order.  He passed up certain praise from the
Minister of Magic himself.  Which tells me that Percy, despite
everything he has said and done, still has morals.  Based on this, I
think, given the choice of advancement at the possible cost of Harry's
life and the Order's safety, Percy would say no.

-Corinth