Yes, the administrators do delete users who have been inactive for a length of time, have no posts, and haven't uploaded any photos. We also do reach out to these users to see if they wish to keep their account.
Space on the forum is not an issue. A few years ago, it was, but currently, there is plenty of space.
A user's pictures and profile never gets deleted if they have albums on the site. We do leave these accounts on so others can view the photos.
As far as certain members experiencing difficulties uploading pictures, what problems specifically are you having? I'll try to find out what to do in order to fix this matter for you guys. Please send me a PM to let me know...rather than changing the subject of this thread.