The Gorse Fox, who, in general, has a relaxed disposition, finds some little things drive him to distraction. The latest of these is "Other" files on his iPad. When connected to the Mac, iTunes reports that some 22GB of his 64GB iPad is consumed by "Other" files.
He googled it. This is a problem that seems to be driving users mad... but no reliable solution has been found. GF has certainly tried a few of them this afternoon. None has worked. He is trying another (for the second time) as he writes this. He has no expectation of success. As Apple provide no (official) visibility of the file system it is hard to be forensic.