果然要更新來源的source檔，意思是我根本沒更新過來源!!

root@mis01:~# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
libpq4 ucf
Recommended packages:
debconf-utils
The following NEW packages will be installed:
libpq4 ucf
0 upgraded, 2 newly installed, 0 to remove and 27 not upgraded.
1 not fully installed or removed.
Need to get 263kB of archives.
After unpacking 1016kB of additional disk space will be used.
Do you want to continue [Y/n]? Y
Get:1 http://archive.ubuntu.com edgy/main ucf 2.0012 [55.2kB]
Get:2 http://security.ubuntu.com edgy-security/main libpq4 8.1.4-7ubuntu0.3 [207kB]
Fetched 263kB in 4s (52.8kB/s)
Preconfiguring packages ...
Selecting previously deselected package libpq4.
(Reading database ... 16645 files and directories currently installed.)
Unpacking libpq4 (from .../libpq4_8.1.4-7ubuntu0.3_amd64.deb) ...
Selecting previously deselected package ucf.
Unpacking ucf (from .../archives/ucf_2.0012_all.deb) ...
Moving old data out of the way
Setting up libpq4 (8.1.4-7ubuntu0.3) ...

Setting up ucf (2.0012) ...

Setting up proftpd (1.3.0-9ubuntu0.1) ...
Adding system user `proftpd' with uid 105...
Adding new user `proftpd' (105) with group `nogroup'.
Not creating home directory `/var/run/proftpd'.
Adding system user `ftp' with uid 106...
Adding new user `ftp' (106) with group `nogroup'.
Creating home directory `/home/ftp'.
`/usr/share/proftpd/templates/welcome.msg' -> `/home/ftp/welcome.msg.proftpd-new'
ProFTPd warning: cannot start neither in standalone nor in inetd/xinetd mode. Check your configuration.

還是要修改設定檔。