debian apt-get chyba

[Vít Vomáčko]

zdravim, kdyz se pokousim nainstalovat diff, mam nasledujici problem:
apt-get upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
0 packages upgraded, 0 newly installed, 0 to remove and 0  not upgraded.
1 packages not fully installed or removed.
Need to get 0B/131kB of archives. After unpacking 0B will be used.
Do you want to continue? [Y/n] y
debconf: delaying package configuration, since apt-utils is not installed
(Reading database ... 6005 files and directories currently installed.)
Preparing to replace diff 2.7-29 (using .../archives/diff_2.7-29_i386.deb) ...
install-info: failed to lock dir for editing! No such file or directory
dpkg: warning - old pre-removal script returned error exit status 2
dpkg - trying script from the new package instead ...
install-info: failed to lock dir for editing! No such file or directory
dpkg: error processing /var/cache/apt/archives/diff_2.7-29_i386.deb (--unpack):
 subprocess new pre-removal script returned error exit status 2
install-info: failed to lock dir for editing! No such file or directory
dpkg: error while cleaning up:
 subprocess post-installation script returned error exit status 2
Errors were encountered while processing:
 /var/cache/apt/archives/diff_2.7-29_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

nevite, co je spatne? jedna se o czf debain, takze pouziva se ramdisk na /var a standardne je / ro, ale pri instalaci je to premountovany na rw..tak jestli v tomto by nejak nemohla byt chyba...
Diky za rady Vita
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