When using Ghost 12.x bianaries either from a Ghost boot disk or from the automation environment.
The Ghost Gui will update the statistics once every % of image compleation as of ghost versions 12.x. in versions of ghost 11.x the statistics would update every 1 second and a better understanding that the image was making progress could be measured. This is especially true when a larger job may take several minutes to compleate each % and will then only update the statistics every several minutes.
This behavior won't prevent the image proccess from compleating it just does not provide as real time of feed back as prior verions of Ghost would do.