uh.. what everyone else said I wasn't that distraught over Sirius... I never really got attached to him, mostly because all throughout book 3 I had a hard time keeping him and Snape straight (darn those similar names). I was devestated when i thought it was going to be McGonagall who died, she's my favourite Hogwarts teacher

Okay, throwing something out into the wild here.... I still don't trust Snape. Even though he's done a lot to prove himself... I just still don't trust him. I feel like he's working under the surface as a double agent or something... you know, doing things for Dumbledore and the OotP to keep his place and not look suspicious, but I think he's still working for Voldemort.

For example... Harry's Occlumency lessons. It seemed like the more he worked with Snape, the more open his mind was to Voldemort... and on the nights when he had too many other things on his mind (exams, etc.) were the nights when he had normal dreams, when Snape was telling him to keep his mind clear.

I could be totally wrong, but I think in the end we'll see that the feelings of suspicion Harry, Ron, and the gang have been having about Snape will be right....