Poor performance, broken in Windows when using roaming profiles, storing binaries in the user&#x27;s roaming AppData folder on Windows, DLL injection in Windows and god-knows-what in OS X to alter Explorer &amp; Finder icons, low base storage.<p>The only thing Dropbox has going for it is that somehow, everyone else is worse. Core syncing and client reliability is just trash across the board for all the other providers. But Dropbox is still infuriating.