O/k/. just found a torrent for Season 4, episodes 1 - 12....but, i just now found it, and so i haven't been able to download and verify the files yet..
here is the link, via bittorrent, for anyone who wants to take a shot with it:
Girls Next Door Season 4 Uncensored episodes 1 - 12
2.2 GB
If you want to wait till i have verified the files are legit, then just hold off, and i'll report back with the results as soon as it finishes downloading..