arcadeOS - video mode crashed my monitor?

[jammadave]

hey again - this one is with arcadeos.  
background note:  this issue is on my home PC where i do a bit of the testing.  (using dmame and arcadeos)

so,  last night i was playing a few games and noticed two things...   one, that after i exit a game, it always goes back to that small arc32 window before reupping the fullscreen menu.  that's not good.

but more importantly, after playing a couple rounds of nintendo's Punch-Out, i exited the game and the monitor went black as normal, but it never came back and the power light went from green to amber.  had to hard-reboot the whole system to get it back!

help?
tia
dave