[collectd] strange df output

[Israel Garcia]

I'm seeing this output using df plugin on a don0.

server:/var/lib/collectd/rrd/srv.domain/df# ls -l
total 3080
-rw-r--r-- 1 root root 307448 2009-11-23 19:57 df-boot.rrd
-rw-r--r-- 1 root root 307448 2009-11-23 19:56 df-dev.rrd
-rw-r--r-- 1 root root 307448 2009-11-23 19:56 df-dev-shm.rrd
-rw-r--r-- 1 root root 307448 2009-11-23 19:56 df-lib-init-rw.rrd
-rw-r--r-- 1 root root 307448 2009-11-23 19:58 df-root.rrd
-rw-r--r-- 1 root root 307448 2009-11-10 15:46 df-tmp-GdwWV6YiGV.rrd
-rw-r--r-- 1 root root 307448 2009-11-23 20:01 df-tmp.rrd
-rw-r--r-- 1 root root 307448 2009-11-20 11:08 df-tmp-s8RPAd9v9l.rrd
-rw-r--r-- 1 root root 307448 2009-08-01 22:27 df-tmp-uBzLp00yzv.rrd
-rw-r--r-- 1 root root 307448 2009-07-02 23:59 df-tmp-Ul8NB461fM.rrd

What is this? How can I avoid this entries on df plugin?

part of my collectd.conf:

LoadPlugin df
<Plugin "df">
  MountPoint "/lib/init/rw"
  MountPoint "/dev/shm"
  MountPoint "/dev"
  IgnoreSelected true
</Plugin>

thanks much
-- 
Regards;
Israel Garcia