Painting one part of my model causes another part to get painted as well I have a problem here.
When i'm painting the foot of my character, the blur that appears on the foot is, somehow, mirrored on the leg too, and the same thing happens when i try the inverse. I didn't use any mirror property while working on the model, and none of axes symmetry is active.

What could possibly be causing this?
I believe TARDIS Maker is correct in your UV it appears that the painted parts do overlap: