[root@atermath-laptop root]# apt-get install startup
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages will be upgraded
  startup
1 upgraded, 0 newly installed, 0 removed and 763 not upgraded.
Need to get 31.0kB of archives.
After unpacking 195B disk space will be freed.
Get:1 ftp://ftp.altlinux.ru noarch/classic startup 0.9.8.5-alt1 [31.0kB]
Fetched 31.0kB in 0s (32.0kB/s)
Committing changes...
Preparing...                 ################################################################### [100%]
1: startup                   ################################################################### [100%]
Done.
[root@atermath-laptop root]# apt-get install etcskel
Reading Package Lists... Done
Building Dependency Tree... Done
etcskel is already the newest version.
0 upgraded, 0 newly installed, 0 removed and 763 not upgraded.
[root@atermath-laptop root]# apt-get install shadow-utils
Reading Package Lists... Done
Building Dependency Tree... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  shadow-utils: Depends: PAM(pam_deny.so)
                Depends: PAM(pam_permit.so)
                Depends: PAM(pam_rootok.so)
                Depends: PAM(pam_userpass.so)
                Depends: libpam.so.0(LIBPAM_1.0)
                Depends: libpam_misc.so.0(LIBPAM_MISC_1.0)
E: Broken packages
[root@atermath-laptop root]#