I've rooted my Galaxy Nexus phone, but "/data/data" is empty As a follow up question, I rooted my Galaxy Nexus phone using Kingo, but when I tried to explore my phone using an application like ASTRO, I found out that the /data/data directory is empty. Why is it empty? Am I missing something? Where are application data stored?
To use "root powers", an app needs to explicitly request those from the system. To my knowledge, Astro File Manager does not include this feature, but e.g. ES File Explorer does.

For most of the newer/updated apps, you can tell that by their permissions: if those include android.permission.ACCESS_SUPERUSER, they request "root powers". Alas: as this permission is not "mandatory" yet, its missing does not necessarily mean an app will not request root access.

The feature you need is called "root explorer". Mentioned ES File Explorer offers this, but you may have to manually enable it in its settings. That done, it should show you everything in the file system.