New HP cartridge installed, 'Remove cyan cartridge shipping lock' message appears. Of course I did. All 4 cartridges are genuine HP, 3 from a pack I bought last month (no cheap fakes). Since I didn't install Cyan until he asked me to, my 30 day return period has expired. Now I have to shell out 135€ for another one. This is bad politics: 90 days is wiser!