Have other colleagues been having problems with access to Nature Publishing Group online services recently? When trying to access some PDFs we just get a blank screen. These and similar problems have been on and off for about 10 days now. Is it just us? Frank Norman, Librarian. National Institute for Medical Research The Ridgeway, Mill Hill, London NW7 1AA, UK tel 020 8816 2227 fax 020 8816 2230 email [log in to unmask]