I assume their are no OS upgrades available for the DG100?
I'm having the following annoying problems with the DG
1-Switching from the Grand Piano mode to the standard arranger mode always resets my settings. For instance...I rarely use the harmonizer and turn it off before starting. If I move from piano mode to arranger mode the harmonizer will come on again. That is not without mentionning what happens if you choose a style and and a voice while forgetting to remove the Grand piano mode.