[Q] Custom kernal/ROM - root "disappeared" after some time

Super User Application Status:
SuperSU application - version 1.93 - is installed!

System File Properties for Root Access:
Standard Location
Check Command: ls -l /system/bin/su:
Result: lrwxrwxrwx root root 2014-03-12 13:18 su -> /system/xbin/su
Analysis: File: su is a symbolic link pointing to another file: /system/xbin/su

Standard Location
Check Command: ls -l /system/xbin/su:
Result: -rwsr-sr-x root root 91980 2008-08-01 13:00 su
Analysis: Setuid attribute is present and root user ownership is present. Root access is correctly configured for this file! Executing this file can grant root access!

Alternative Location
Check Command: ls -l /sbin/su:
Result: /sbin/su: Permission denied
Analysis: File system permissions restricted and denied access.

Alternative Location
Check Command: ls -l /system/xbin/sudo:
Result: /system/xbin/sudo: No such file or directory
Analysis: File /system/xbin/sudo does not exist.

Root User ID and Group ID Status:
SU binary not found or not operating properly

System Environment PATH: /sbin /vendor/bin /system/sbin /system/bin /system/xbin

ADB Shell Default User:
ADB shell setting for standard access, stored in default.prop, is configured as: shell (non root) user - ro.secure=1

Results provided on your GT-N7000 device by Root Checker Pro version 1.3.6 from joeykrim in the Android Market

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BusyBox has been installed correctly!

System Environment PATH: /sbin /vendor/bin /system/sbin /system/bin /system/xbin

BusyBox binary location:
/system/xbin/busybox

BusyBox binary file information:
-rwsr-xr-x root root 1165484 2008-08-01 13:00 busybox

Installed BusyBox Version:
1.20.2-linusyang

BusyBox supports the following applets:
[, [[, acpid, adjtimex, ar, arp, arping, ash, awk, base64, basename, bbconfig, beep, blkid, blockdev, bootchartd, brctl, bunzip2, bzcat, bzip2, cal, cat, catv, chat, chattr, chgrp, chmod, chown, chpst, chroot, chrt, chvt, cksum, clear, cmp, comm, cp, cpio, crond, crontab, cttyhack, cut, date, dc, dd, deallocvt, depmod, devmem, df, dhcprelay, diff, dirname, dmesg, dnsd, dnsdomainname, dos2unix, dpkg, dpkg-deb, du, dumpkmap, dumpleases, echo, ed, egrep, env, envdir, envuidgid, ether-wake, expand, expr, fakeidentd, false, fbset, fbsplash, fdflush, fdformat, fdisk, fgconsole, fgrep, find, findfs, flash_lock, flash_unlock, flashcp, flock, fold, free, freeramdisk, fsck, fsck.minix, fsync, ftpd, ftpget, ftpput, fuser, getopt, grep, groups, gunzip, gzip, halt, hd, hdparm, head, hexdump, hostname, httpd, hush, hwclock, id, ifconfig, ifdown, ifup, inetd, init, inotifyd, insmod, install, ionice, iostat, ip, ipaddr, ipcalc, ipcrm, ipcs, iplink, iproute, iprule, iptunnel, kbd_mode, kill, killall, killall5, klogd, less, linuxrc, ln, loadkmap, logread, losetup, lpd, lpq, lpr, ls, lsattr, lsmod, lsof, lspci, lsusb, lzcat, lzma, lzop, lzopcat, makedevs, makemime, man, md5sum, mdev, mesg, microcom, mkdir, mkdosfs, mke2fs, mkfifo, mkfs.ext2, mkfs.minix, mkfs.reiser, mkfs.vfat, mknod, mkswap, mktemp, modinfo, modprobe, more, mount, mountpoint, mpstat, mv, nameif, nanddump, nandwrite, nbd-client, nc, netstat, nice, nmeter, nohup, nslookup, od, openvt, patch, pgrep, pidof, ping, ping6, pipe_progress, pivot_root, pkill, pmap, popmaildir, poweroff, powertop, printenv, printf, ps, pscan, pstree, pwd, pwdx, raidautorun, rdate, rdev, readlink, readprofile, realpath, reboot, reformime, renice, reset, resize, rev, rm, rmdir, rmmod, route, rpm, rpm2cpio, rtcwake, run-parts, runsv, runsvdir, rx, script, scriptreplay, sed, sendmail, seq, setconsole, setkeycodes, setlogcons, setserial, setsid, setuidgid, sh, sha1sum, sha256sum, sha512sum, showkey, slattach, sleep, smemcap, softlimit, sort, split, start-stop-daemon, stat, strings, stty, sum, sv, svlogd, swapoff, swapon, switch_root, sync, sysctl, syslogd, tac, tail, tar, tcpsvd, tee, telnet, telnetd, test, tftp, tftpd, time, timeout, top, touch, tr, traceroute, traceroute6, true, tty, ttysize, tunctl, tune2fs, ubiattach, ubidetach, ubimkvol, ubirmvol, ubirsvol, ubiupdatevol, udhcpc, udhcpd, udpsvd, umount, uname, uncompress, unexpand, uniq, unix2dos, unlzma, unlzop, unxz, unzip, uptime, usleep, uudecode, uuencode, vconfig, vi, volname, watch, watchdog, wc, wget, which, whoami, whois, xargs, xz, xzcat, yes, zcat, zcip

Results provided on your GT-N7000 device by Root Checker Pro version 1.3.6 from joeykrim in the Android Market -

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