CoS chapters 17-18 post DH look

[Zara]

No: HPFGUIDX 181335

> Bex;
> But DD doesn't even know about the diary, much less how it acted,
> until after he prompts Harry (above). This might also be a
> Legilimens!DD moment, too - Harry is wondering how to explain how 
> Ginny was opening the Chamber under Diary!Tom's control without
> getting her into trouble. DD gives him this opening.

zgirnius:
Not legilimency in this case, in my opinion. If you look at Alla's 
posts from the earlier chapters, she quotes Dumbledore as saying he 
knows who has opened the chamber, just not how. 

http://groups.yahoo.com/group/HPforGrownups/message/181168

I always took that to mean he believed Voldemort was behind it.