I've just started using IrfanView's LuraWave JPEG2000 plugin (at resolutions beyond 640x480) and have noticed serious blurring artifacts at the "default" setting of 95. Using the max setting of "100" the files are huge and it still doesn't look that impressive. Large sections of images look blended like smooth water, with certain areas in sharp detail. The only super clean images I get are in the non-lossy mode of JPEG2000, which makes huge files. The quality is far worse than standard JPEG (even at "80" or below). However, before I registered LuraWave to allow JPEG2000 saves beyond 640x480, the images looked quite good. Are their known bugs with the full version of LuraWave and/or IrfanView's implementation? K2