Raster display problem

Hello,

I have problems diplaying raster files, both in the demo preview and when I use it as a WMS. I see a blank (white) map, but when I click on the map I get correct feature info.

I use Geoserver 1.7.5

Gdalinfo says:

Driver: GTiff/GeoTIFF
Files: Kbakarta8_99.tif
Size is 11934, 11927
Coordinate System is:
PROJCS["unnamed",
    GEOGCS["unnamed",
        DATUM["unknown",
            SPHEROID["unretrievable - using WGS84",6378137,298.257223563]],
        PRIMEM["Greenwich",0],
        UNIT[,0.0174532925199433]],
    UNIT["unknown",1]]
Origin = (141373.450000000010000,6387245.500000000000000)
Pixel Size = (3.000000000000000,-3.000000000000000)
Metadata:
  AREA_OR_POINT=Area
  TIFFTAG_XRESOLUTION=127
  TIFFTAG_YRESOLUTION=127
  TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
Image Structure Metadata:
  COMPRESSION=LZW
  INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  (  141373.450, 6387245.500)
Lower Left  (  141373.450, 6351464.500)
Upper Right (  177175.450, 6387245.500)
Lower Right (  177175.450, 6351464.500)
Center      (  159274.450, 6369355.000)
Band 1 Block=11934x512 Type=Byte, ColorInterp=Red
Band 2 Block=11934x512 Type=Byte, ColorInterp=Green
Band 3 Block=11934x512 Type=Byte, ColorInterp=Blue

What's the problem?

Thanks for help!
/Per S