Wikimedia Bugzilla is closed!

Created attachment 8194 [details]
Original file from: http://upload.wikimedia.org/wikipedia/commons/6/6a/Jan_hoet.jpg (looks fine for me)

Some thumbnails (for now I could only find [[commons:File:Jan_hoet.jpg]] are negative.

Extracted EXIF info with Apple Preview:
{
    ColorModel = CMYK;
    DPIHeight = 300;
    DPIWidth = 300;
    Depth = 8;
    Orientation = 1;
    PixelHeight = 1299;
    PixelWidth = 880;
    "{Exif}" =     {
        ColorSpace = 65535;
        PixelXDimension = 880;
        PixelYDimension = 1299;
    };
    "{JFIF}" =     {
        DensityUnit = 1;
        JFIFVersion =         (
            1,
            2
        );
        XDensity = 300;
        YDensity = 300;
    };
    "{TIFF}" =     {
        Compression = 1;
        DateTime = "2010:07:03 20:26:34";
        Orientation = 1;
        PhotometricInterpretation = 5;
        ResolutionUnit = 2;
        Software = "Adobe Photoshop CS3 Windows";
        XResolution = 300;
        YResolution = 300;
    };
}

Extracted Metdata by MediaWiki:
== Metadata ==
Width			2,121
Height			3,132
Compression scheme		Uncompressed
Pixel composition		5
Orientation				Normal
Number of components	4
Horizontal resolution		300 dpi
Vertical resolution		300 dpi
Data arrangement		chunky format
Software used			Adobe Photoshop CS3 Windows
File change date and time	20:26, 3 July 2010
Color space	65535