I have a serious situation here. My Olympus EP-L1 raw files have serious jagged diagonals. It's only visible on sharp curved surfaces. I ran some test on straight sharp diagonals from 45º to 0º but found no artifacts. Here is a comparison between in-camera jpeg and .ORF converted to DNG in Lightroom 3.3, ACR 6.3. BTW, this is visible on .ORF files as well as DNG. I took these photos with RAW+JPEG at full resolution, highest quality.