Did you read the first post SaraK?
The staff said that it would not be automatic and the sorting is open for a long time.

So don't worry or get stressed out the staff is doing their best to get everything running and functioning.
Also I wish everyone good luck and I hope you get the house that you all desire. I look forward to see more Hufflepuffs in the school as well. Just remember to stay calm because the staff is working as hard and as fast as they can.
- Angel