aptitude zavar

[Bálint István]

Most próbáltam Debian Lenny-n futtatni az aptitude update-et és furcsa 
módon hibát jelez.
Próbáltam webminből is, ez a hibaüzenet:
Reading package lists... Building dependency tree... Reading state 
information... The following packages will be upgraded: libexpat1 ntp 
ntpdate debconf: unable to initialize frontend: Dialog debconf: (TERM is 
not set, so the dialog frontend is not usable.) debconf: falling back to 
frontend: Readline debconf: unable to initialize frontend: Readline 
debconf: (This frontend requires a controlling tty.) debconf: falling 
back to frontend: Teletype dpkg-preconfigure: unable to re-open stdin:
illetve:
dpkg - trying script from the new package instead ... dpkg (subprocess): 
unable to execute new post-removal script: Permission denied dpkg: error 
processing 
/var/cache/apt/archives/ntpdate_1%3a4.2.4p4+dfsg-8lenny3_i386.deb 
(--unpack): subprocess new post-removal script returned error exit 
status 2 dpkg (subprocess): unable to execute new post-removal script: 
Permission denied dpkg: error while cleaning up: subprocess post-removal 
script returned error exit status 2 Errors were encountered while 
processing: /var/cache/apt/archives/libexpat1_2.0.1-4+lenny2_i386.deb 
/var/cache/apt/archives/ntp_1%3a4.2.4p4+dfsg-8lenny3_i386.deb 
/var/cache/apt/archives/ntpdate_1%3a4.2.4p4+dfsg-8lenny3_i386.deb E: 
Sub-process /usr/bin/dpkg returned an error code (1)
Mi lehet a baj? Nem igazodom ki rajta. Mi az hogx "permission denied", 
ha root-ként adom ki?
Köszönettel:
Bálint István