/dev/md0 at 100%

Thanks guys, still haven't found what I'm looking for.

The logs doesn't seem to be the problem thou.

total 5.4M
-rw-r----- 1 root root 44 2014-08-31 06:25 acpid
-rw-r----- 1 root root 20 2014-08-30 06:25 acpid.1.gz
-rw-r----- 1 root root 64 2014-08-17 06:25 acpid.2.gz
-rw-r----- 1 root root 64 2014-08-10 06:25 acpid.3.gz
-rw-r----- 1 root root 64 2014-08-03 06:25 acpid.4.gz
-rw-r--r-- 1 root root 0 2014-08-30 06:25 acpid.old
drwxr-xr-x 2 root root 4.0K 2014-01-08 18:42 apt
-rw-r--r-- 1 root root 818K 2014-09-04 10:47 auth.log
-rw-r----- 1 root adm 31 2008-04-09 14:59 boot
-rw-rw-r-- 1 root utmp 0 2014-09-01 06:25 btmp
-rw-rw-r-- 1 root utmp 0 2014-08-01 06:25 btmp.1
-rw-r--r-- 1 root root 823K 2014-09-04 10:38 cron.log
drwxr-xr-x 2 root root 4.0K 2014-09-04 06:25 cups
-rw-r--r-- 1 root root 624K 2014-08-30 06:25 daemon.log
-rw-r--r-- 1 root root 75K 2012-05-07 12:13 debug
-rw-r--r-- 1 root root 0 2014-08-30 06:25 dmesg
-rw-r--r-- 1 root root 4.0K 2014-08-30 06:25 dmesg.old
-rw-r----- 1 root adm 0 2014-04-01 06:25 dpkg.log
-rw-r----- 1 root adm 0 2014-08-30 06:25 dpkg.log.1
-rw-r----- 1 root adm 34K 2012-05-30 13:53 dpkg.log.10.gz
-rw-r----- 1 root adm 152 2012-06-08 11:14 dpkg.log.11.gz
-rw-r----- 1 root adm 32K 2012-03-23 20:12 dpkg.log.12.gz
-rw-r--r-- 1 root root 24K 2014-08-30 06:25 dpkg.log.1.old
-rw-r----- 1 root adm 39K 2014-01-08 18:42 dpkg.log.2.gz
-rw-r----- 1 root adm 39K 2014-01-08 18:42 dpkg.log.3.gz
-rw-r----- 1 root adm 39K 2014-01-08 18:42 dpkg.log.4.gz
-rw-r----- 1 root adm 38K 2013-10-17 15:10 dpkg.log.5.gz
-rw-r----- 1 root adm 37K 2013-07-01 21:31 dpkg.log.6.gz
-rw-r----- 1 root adm 37K 2013-07-01 21:31 dpkg.log.7.gz
-rw-r----- 1 root adm 34K 2012-07-02 16:06 dpkg.log.8.gz
-rw-r----- 1 root adm 34K 2012-05-30 13:53 dpkg.log.9.gz
drwxr-s--- 2 mail adm 4.0K 2014-09-04 06:25 exim
drwxr-xr-x 4 admin admin 4.0K 2014-09-04 10:52 frontview
-rw-r--r-- 1 root root 0 2014-08-30 06:25 fsck.log
-rw-r--r-- 1 root root 88 2013-05-17 11:05 gpio.event
-rw-r--r-- 1 root root 260K 2014-08-30 06:25 kern.log
-rw-r--r-- 1 root root 0 2012-09-17 06:25 kern.log.1
-rw-r--r-- 1 root root 726K 2012-09-17 06:25 kern.log.1.old
-rw-r--r-- 1 root root 0 2012-07-16 06:25 kern.log.2
-rw-r--r-- 1 root root 0 2012-07-14 06:25 kern.log.3
-rw-rw-r-- 1 root utmp 286K 2014-09-04 10:47 lastlog
-rw-r--r-- 1 root admin 0 2014-08-30 06:25 LeafP2P.log
-rw-r--r-- 1 root root 0 2014-08-30 06:25 LeafP2P.log.old
-rw-r--r-- 1 root root 0 2011-09-23 14:15 lpr.log
-rw-r--r-- 1 root root 0 2011-09-23 14:15 mail.err
-rw-r--r-- 1 root root 0 2011-09-23 14:15 mail.info
-rw-r--r-- 1 root root 0 2011-09-23 14:15 mail.log
-rw-r--r-- 1 root root 0 2011-09-23 14:15 mail.warn
-rw-r--r-- 1 root root 168K 2012-05-07 13:37 messages
drwxr-s--- 2 104 adm 4.0K 2008-03-11 21:23 mysql
-rw-r--r-- 1 root root 1.5K 2012-04-30 12:31 netatalk.log
drwxr-sr-x 2 9 kmem 4.0K 2007-09-07 13:55 news
-rw-r----- 1 root root 0 2014-08-30 06:25 proftpd.log
-rw-r--r-- 1 root root 0 2014-08-30 06:25 proftpd.log.old
lrwxrwxrwx 1 root root 22 2014-03-17 09:42 raidiator_version -> /etc/raidiator_version
-rw-r--r-- 1 root admin 357 2012-08-07 13:05 ReadyNAS_Remote.log
-rw-r--r-- 1 root root 193K 2012-07-20 06:25 ReadyNAS_Remote.log.old
drwxrwxr-x 3 root adm 4.0K 2014-09-04 06:25 samba
lrwxrwxrwx 1 root root 33 2014-03-17 09:42 slimserver.log -> /var/log/squeezecenter/server.log
-rw-r--r-- 1 root root 38K 2014-09-04 09:17 syslog
-rw-r--r-- 1 root root 0 2012-09-17 06:25 syslog.1
-rw-r--r-- 1 root root 726K 2012-09-17 06:25 syslog.1.old
-rw-r--r-- 1 root root 0 2012-07-16 06:25 syslog.2
-rw-r--r-- 1 root root 0 2012-07-14 06:25 syslog.3
-rw-r--r-- 1 root root 213K 2014-09-04 09:17 user.log
-rw-r--r-- 1 root root 0 2011-09-23 14:15 uucp.log
-rw-rw-r-- 1 root utmp 2.7K 2014-09-04 10:47 wtmp
-rw-rw-r-- 1 root utmp 6.8K 2014-08-29 16:50 wtmp.1