BDP S 5100 takes more than 10 minutes to get to the home screen. In some discs it is forever stuck on "Wait".
you must have enabled the network mode....so it waits till it finds network connection, initial load etc... switch it off in the main options.... i dont remember the exact menu steps .. will post it sometime later...
The disc wait has not happened with me till date...... may be it's worth while to reload the firmware...