iyahdub:
Sounds like its deffo the Power adapter not having 'nuff juice.
As USB ports deliver between 500mA and 900mA(depending on the version) you'd need a power adapter that conforms within those values.As you seems to be drawing a lot out of it with leds and all, go for the top values given !!
so i've bought an adapter that gives out 12V & 1A, i've tried it out but the problem still remains... =(
why is this happening?!