media adjustment stuck?

After the long wait of transferring some files to another disk, I got "copy processed finished" and the pop up tells me that some files are unusable....grrrr, whatever about that.
Now, the little tabbed pop up "media adjustment" has been going for maybe an hour or so. Is this stuck, or does it take some time?
Now, the little tabbed pop up "media adjustment" has been going for maybe an hour or so. Is this stuck, or does it take some time?