Where is the option "auto rotate" i can't find it?
Why thumbnail is wrong orientated, after click on thumbnail, the image is wrong orientated but if i click on it and i view the image in browser is correctly orientated.
Sorry for my english!
Thank you so much!

The Auto rotate option has been removed in 1.4.3.
Please read the part about Auto rotate here:
http://www.zenphoto.org/news/zenphoto-1.4.3

Ok. thank you. and why the rotating options is disabled in my default theme?
i need to modify the degree... how can i make it?

Did you read the link?