I have two Sky Drive folders under my albums on my phone: Mobile Downloads and Camera Roll. The Mobile Downloads appeared after I installed the Sky Drive app and signed in with my normal Yahoo email, the Camera Roll was there since I took my first photo on my phone, and I presume is linked to the Microsoft email that I had to setup in order to set the phone up.
I just did what you suggested; logged in to the Sky Drive website on my laptop with both emails, and deleted all the folders from both of them. However, the folders still appear in the Albums section on my phone (I've turned it off and on again), and the only difference is that they now say 'We can't update albums at the moment' above the photos.
Any more ideas on how to get rid of them?
Thanks