Who's abusing my SATA controller?

$ su -
# /etc/init.d/sysklogd stop
# echo 1 > /proc/sys/vm/block_dump

# echo "Wait some time here, just use your desktop as usual"

# dmesg | gawk '/(READ|WRITE|dirtied)/ {activity[$1]++} END {for (x in activity) print activity[x],x}'| sort -nr | head -n 10 | gawk '{print $2 " " $1}'
pdflush(215): 160
evolution(7736): 149
pdflush(7670): 126
firefox-bin(7748): 26
gaim(7146): 12
jfsCommit(221): 5
gconfd-2(7114): 5
mono(7200): 4
mono(7199): 4
jfsIO(220): 4

# echo 0 > /proc/sys/vm/block_dump
# /etc/init.d/sysklogd start
# exit