fsync error while upgrade

[jure.buble@altavista.net]

Hi,
 
can enyone help me with the following error which i get when i run:
apt-get upgrade

Reading Package Lists... Done
Building Dependency Tree... Done
The following packages have been kept back
  ae bc exim gettext kbd libnet-perl librpm1 login lynx mc mtools netbase
  netstd nfs-server passwd perl perl-base ppp pppconfig rpm samba samba-common
  shellutils slang1 swat sysvinit util-linux whiptail
21 packages upgraded, 0 newly installed, 0 to remove and 28 not upgraded.
Need to get 0B/8938kB of archives. After unpacking 280kB will be used.
Do you want to continue? [Y/n] y
(Reading database ... 9602 files and directories currently installed.)
Preparing to replace dpkg 1.6.12 (using .../dpkg_1.6.12.99_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/dpkg_1.6.12.99_i386.deb (--unpack
):
 unable to fsync updated status of `dpkg': Input/output error
Errors were encountered while processing:
 /var/cache/apt/archives/dpkg_1.6.12.99_i386.deb
Processing was halted because there were too many errors.
E: Sub-process /usr/bin/dpkg returned an error code (1)
 
 
Sincearlly Jure

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