We have been experiencing some problems with our player not loading blu-ray discs. It plays DVDs OK. I have updated the software to the latest version and now even more discs are not loading, that have worked fine in the past. For example, out of the Dr Who specials box set, 2 discs work and 2 don't. This is really frustrating. i thought Blu-ray was supposed to be the way forward! Can anyone help with this?