This happens with some video cards if your texture isn't using power of two numbers for the size(32, 64, 128, etc.). I'd round the dimensions of your texture up to the nearest power of two numbers and see if that fixes it.
then is there no Fixes for this? only 2^ numbers?
Win7 x64, korean, NVIDIA GTX 460.
+ IT Does not look like The IMAGE when i use 300*200(Works fine). that image is 300*150.