16F883/886 Help

[Archangel]

Ok, so I am doing some tests (light some LED's) with this microcontroller before making my application with it. The problem I am having is that using RA4, RA3, RB0, and RB1 as inputs, and everything else as outputs. RB4, and RB5 specifically (haven't tested the others) have issues. When I press the button for one of the inputs, it pulses the LED's fine on the development board (EasyPIC4) and stops when I release the button as it's written this way in the code. <font color=red>When I move this to the breadboard, there seems to be a small leakage of current when I release the button to stop the pulsing.
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By Breadboard, do you mean the white boards which you simply push in the components ?
If so, is it an old one ? I have had several of these which were corroded inside causing high resistance and open circuit issues, as well as excessive loading on OSC pins. This might explain why it works on EasyPIC, but not the breadboard. You should be using pullups or pull down resistors as appropriate according to your code.