The astronomical prices printer makers charge for cartridges have long been a favourite subject of internet comedians (with more than one noting that printer ink is now more valuable than gold), so it came as a bit of a surprise when HP actually made some concessions after pushing out an update that bricked unofficial ink cartridges last year. Unfortunately, it seems HP has now returned to its iron-fisted ways, once again locking down the use of third-party ink with a software update.