They are not necessarily in /system/app or /data/app. /data/app is actually empty. A search for *.apk found a few places such as /mnt/asec The IME I am struggling to install, MultiLing Gingerbread Keyboard 0.0.26, does not show up anywhere. I used Astro application backup. Tried to back it up and it ended up in /sdcard/backup/apps/com.klye.ime.latin-1.apk. Search for klye under / only found a single file, the backup. This is really confusing for me. Can anyone tell me what's going on? On the side, how can I copy a file to /system/app? Neither Astro or ES let me do that. Thanks!