Hey Guys I have figured out one good reason why "other" takes too much space in the first place.
In my case my iPad Mini WiFi 16GB showed 600 MB remaining and a huge 3GB "other"
I noticed that "other" increases dramatically, if you interrupt Syncing, in particular the process called "transfering purchases"
My solution.
1. Reboot iPad Mini
2. Connect to Laptop and wait for the itunes to lock on, i.e. start up.
3. Once itunes backs up iPad Mini, the syncing will start, but you need "transfering purchases" to start as well later on. If it does not start after synching finishes, the manual start "transfering purchases" by File Menu, the Devices, then "transfering purchases"
4. Wait for it to finish, can take a while if you purchased several apps via the app store on the iPad Mini.
5. During the "transfering purchases" , you will see the yellow "other" go back and forth, i.e. decrease and increase (clearly showing that the size of the "other" is affacted by "transfering purchases" )
6. Once "transfering purchases" is 100% complete not 99%, the yellw "other" went from 3GB to 900MB. It did not got to zero, but at least, I still got increase in space from 600MB to 2.9GB wow!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
7. Now disconnect, fingers crossed.
2.9GB still holding, after iPad mni discinnected. I now dread using itunes now to back up or sync. Maybe too much synching is the problem.
What I will do is connect my iPad to iTunes once every few weeks, instead of every few days. This means though that I will have a long "transfering purchases" wait next time I connect my iPad Mini to my laptop.
Thanks ok. Got precious space back ....Huray!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I feel Good.........
Miss iPad,
London, U.K.
P.S. I checked the space on iPad Mini, a few hours after I did the "transfering purchases" , no problems, it is still 2.9GB free space!!!!!!!!!!!!!!!!!!!!!!!!!! Thank God!!
Dear Apple, please , please, please, "transfering purchases" works but looks like a bug issue to me, please update this issue when you roll out iOS 7 in September 2013. Thanks.