Hi,

I saw that on the new graphic files used at the top of the BugZilla, there is visible toothsaw on the horizontal stripe. It is cause by having took the repeated horizontal part right in the beginning of the curve of the ribbon. A quick fix for it would be either:
1. Redo as it should the repeated part
2.Shrink the repeated part to 1 pixel wide.

It would look better than in the following screenshot!
-Alexandre