Image Uploader Thumbnails often 1 pixel off in Height?

Hi,

Not sure if anyone else has observed this, but when I generate thumbnails in Image Uploader with:

iu.addParam("UploadThumbnail1FitMode", "3");
iu.addParam("UploadThumbnail1Height", "100");

iu.addParam("UploadThumbnail2FitMode", "3");
iu.addParam("UploadThumbnail2Height", "160");

I often end up with thumbnails that are one pixel less, so the 100 height becomes 99pixels and 160 height becomes 159pixels. I have also tried this with the FitMode set to 'fit' and it still does the same thing.

Has anyone else seen this and know what can be done to coerce Image Uploader to allways generate a thumbnail that matches the specified height?

Thanks,

Stuart.