I have used this program for over a year now to resize photos for Internet posting. I have never encountered any problems with it 'and' find it very user friendly, although I usually work with individual photos, rather than attempting to do batch resizing.
The quality of the resulting image is exceptional. I would like to see more options in the total byte content of the resulting image though, as the gap between best, high, and medium seems a bit extreme. I am usually resizing to 300kb content or less at 900 x 600 . . and usually set to 'high' quality.
But some photos are a bit too rich and result in >300kb at my chosen dimensions, forcing me to default to the medium resolution option. That's the only annoying thing I have encountered using this software. Otherwise, very user friendly and I luv it !
Dogh