There is one taking 100% CPU called dd...
top - 09:20:26 up 5 days, 16:55, 2 users, load average: 1.82, 1.94, 2.00
Tasks: 116 total, 3 running, 113 sleeping, 0 stopped, 0 zombie
Cpu(s): 15.9%us, 18.0%sy, 0.0%ni, 56.2%id, 9.5%wa, 0.0%hi, 0.3%si, 0.0%st
Mem: 4072980k total, 3957936k used, 115044k free, 123652k buffers
Swap: 0k total, 0k used, 0k free, 3499048k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
32208 root 20 0 10348 8872 644 R 100 0.2 3521:25 dd
32209 root 20 0 2248 624 464 S 49 0.0 1647:58 sed
22002 root 20 0 76532 6152 608 S 3 0.2 121:43.78 shfs
6875 nobody 20 0 20944 6452 5240 S 2 0.2 3:07.45 smbd
21704 root 20 0 0 0 0 S 2 0.0 144:45.24 unraidd
141 root 20 0 0 0 0 D 1 0.0 12:26.39 sync_supers
450 root 20 0 0 0 0 S 0 0.0 12:09.90 kswapd0
1415 root 20 0 56940 1876 1148 S 0 0.0 3:47.79 emhttp
16944 root 20 0 0 0 0 S 0 0.0 0:30.27 flush-9:13
1 root 20 0 828 280 240 S 0 0.0 0:04.81 init