I had been noticing that the “Other” section of my iPod Touch’s capacity kept expanding in what seemed to be an almost exponential fashion. Looking around the web, I read several times that the “Other” included system files, thumbnails, various cache files etc and that the only way to reign it back into control was to ‘Restore’ the iPod or iPhone.. considering I have all but 5GB of my 64GB touch filled, restore is a long and tedious process which I didn’t particularly want to undertake even though my ‘Other’ had swelled to well over 2GB.
Thinking some more on it last night I though there had to be an easy way for the system to clear these caches. There is a clear internet cache under Settings>Safari but that doesn’t clear everything. Then I figured I’d try shutting it down (Hold down the top button until you see slide to power off) and seeing if a restart would clear things. Sure enough, after the restart I went from 3.6GB free to 5.3GB free. The only change being in the ‘Other’ section. So to bring the ‘Other’ section of your iPod/iPhone capacity down just restart!