Upgraded from Squeeze to unstable

[Csanyi Pal <csanyipal@gmail.com>]

Hi,

I have upgraded my Desktop system Debian Squeeze
to Debian unstable.

Now when I try to upgrade or install some package
I get output and error messages:

Reading changelogs... Done
dpkg: warning: 'ldconfig' not found in PATH or not executable.
dpkg: warning: 'start-stop-daemon' not found in PATH or not executable.
dpkg: error: 2 expected programs not found in PATH or not executable.
Note: root's PATH should usually contain /usr/local/sbin, /usr/sbin and /sbin.
E: Sub-process /usr/bin/dpkg returned an error code (2)
Nem sikerült telepíteni egy csomagot.  Helyreállítás megkisérlése:
dpkg: warning: 'ldconfig' not found in PATH or not executable.
dpkg: warning: 'start-stop-daemon' not found in PATH or not executable.
dpkg: error: 2 expected programs not found in PATH or not executable.
Note: root's PATH should usually contain /usr/local/sbin, /usr/sbin and /sbin.

How can I solve this problem?
Any advices will be appreciated!

-- 
Regards, Pal
<http://cspl.me>