Oppo 103 freezing.........

I have an oppo 103 under a year old with recent software update and constantly freezes up using a portable stick in the usb on front panel. If I scroll down too fast or next song too fast it will freeze up everything on the machine. I have to turn off, unplug the unit and plug back in after a few minutes. Extremely annoying. Does anyone have this issue and how can it be rectified?
Thx in advance...