Probably a problem with your page settings in Distiller.
Same problem here but I used the following directions and it worked!
Edit the Adobe Distiller settings to force the page to rotate in the right direction. In my case this is a good fix for me because all my pages are 11″ wide x 8.5″ tall. The path is:
Settings > Edit Adobe PDF Settings…,
at the bottom of the first page that opens is "Default Page Size". In my case I reversed the numbers and it fixed my problem. I then saved the settings with the word landscape on the end of the settings name. If you're doing a lot of different size pages and having this issue you'd have to make a new settings file for each page size.
Kudos to . . .
By the way, I'm using InDesign CC on an iMac running OSX 10.8.4 (Mountain Lion)
This is probably a stupid question, but where do I find Adobe Distiller settings? I have a booklet due tomorrow for my final and have been trying to fix this problem for two weeks but have not been able to find anything helpful, and now that I've found this, cannot find where the settings are. PLEASE HELP.
Windows or Mac?