[Ubuntu] Packages being kept back

# apt-get upgrade
Reading package lists... Done
Building dependency tree... Done
The following packages have been kept back:
openssh-client openssh-server
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
# apt-get install openssh-client openssh-server
Reading package lists... Done
Building dependency tree... Done
The following extra packages will be installed:
openssh-blacklist
Suggested packages:
rssh
The following NEW packages will be installed:
openssh-blacklist
The following packages will be upgraded:
openssh-client openssh-server
2 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 2909kB of archives.
After unpacking 4280kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://us.archive.ubuntu.com dapper-updates/main openssh-blacklist 0.1-1ubuntu0.6.06.1 [2125kB]
Get:2 http://us.archive.ubuntu.com dapper-updates/main openssh-server 1:4.2p1-7ubuntu3.4 [207kB]
Get:3 http://us.archive.ubuntu.com dapper-updates/main openssh-client 1:4.2p1-7ubuntu3.4 [577kB]
Fetched 2909kB in 45s (63.6kB/s)
Preconfiguring packages ...
Selecting previously deselected package openssh-blacklist.
(Reading database ... 93922 files and directories currently installed.)
Unpacking openssh-blacklist (from .../openssh-blacklist_0.1-1ubuntu0.6.06.1_all.deb) ...
Preparing to replace openssh-server 1:4.2p1-7ubuntu3.3 (using .../openssh-server_1%3a4.2p1-7ubuntu3.4_i386.deb) ...
Unpacking replacement openssh-server ...
Preparing to replace openssh-client 1:4.2p1-7ubuntu3.3 (using .../openssh-client_1%3a4.2p1-7ubuntu3.4_i386.deb) ...
Unpacking replacement openssh-client ...
Setting up openssh-blacklist (0.1-1ubuntu0.6.06.1) ...
Setting up openssh-client (4.2p1-7ubuntu3.4) ...

Setting up openssh-server (4.2p1-7ubuntu3.4) ...
* Restarting OpenBSD Secure Shell server... [ ok ]

#