Avatars not working after upload image redirects to network administration if using super admin

Hi all, im having issue while uploading avatars to a user blog with my super admin account (also tried with user admin account), after upload is finish if i click in any other link at admin menu it redirects to "Site Network" which is weird, i also know it shouldn't have this behaviour. The blog uses a mapped domain i don't have sure if its domain mapping causing this behaviour.

Also the avatar image is giving 404 error of location not found if i upload from Network.

The site name is advocacia.com.pt