pure-ftpd process problem

[Trashi]

Hello.

I have small questions about the division of processes of pure-ftpd-mysql. I did use this tutorial partly.
My pure runs on a debian box as a stand-alone server.

root@server:/# top | grep pure
32132 root      16   0  7416  776  412 S    0  0.0   0:00.00 pure-ftpd

All users are in my mysql database available. I set a MYSQLDefaultUID/GID (pure,ftp) for all virtual users... root is _not_ able to login!
If I connect with any (virtual)user to pure I can watch the following:

root@vs241011:/etc# ps afuxww | grep pure
root     32132  0.0  0.0   7416   776 ?        Ss   11:23   0:00 pure-ftpd (SERVER)
pure     26096  0.0  0.0   7464  1728 ?        S    11:38   0:00  \_ pure-ftpd (IDLE)
root     26097  0.0  0.0   7424   532 ?        S    11:38   0:00       \_ pure-ftpd (PRIV)

You can find my pure-ftpd.conf here: http://pastebin.com/sYu4S44r
And my pure-ftpd_mysql.conf: http://pastebin.com/zJRLKYLJ

I hope someone knows what the second root user is doing there and why it is subordinated user pure, because I didnt find documentations or s.th. like this about the pure processes!?

Regards, Trashi.