okay, first i thought it was my monitor or windows 7 doing something, but now i dont know.. i just installed XP SP3 instead so i could use photoshop once again, but, the problem persist >.< when i use colors, they turn out like this

this is what happens when i use any size of brush. the picture is taken with a 100 pixel brush.


im pissed now that i cant do my work ... there must be something to fix this, i have tried to play around in the RGB settings in photoshop but with no luck