Comment 5 for bug 648379

I forgot to say this: for my screen is not perfect, I couln't directly notice the "weird thatched-pattern".
In order to reveal the artifacts, I set the bucket-fill tool's threshold at 0 and then randomly clicked the area. If the scaling went fine, the whole image should be filled. When resizing at 1/5 and 1/6, only bits of the picture or the pattern itself would be filled.

So, in my case, I was not able to see the artifacts because of my screen's quality and settings, but these artifacts did exist.