[Users] /dev/mem: Permission denied

[Dean Gostiša]

Hi,

i have problem, i have created openvz Gentoo Server, and create Debian 
VM on it, but when installing some packages like this i get:
apt-get --reinstall install xfonts-base
Reading package lists... Done
Building dependency tree... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not 
upgraded.
Need to get 0B/6131kB of archives.
After unpacking 0B of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 20054 files and directories currently installed.)
Preparing to replace xfonts-base 1:1.0.0-4 (using 
.../xfonts-base_1%3a1.0.0-4_all.deb) ...
/dev/mem: Permission denied
Unpacking replacement xfonts-base ...
/dev/mem: Permission denied
warning: /usr/lib/X11/fonts/misc does not exist or is not a directory
warning: /usr/lib/X11/fonts/misc does not exist or is not a directory
Setting up xfonts-base (1.0.0-4) ...
/dev/mem: Permission denied
warning: /usr/lib/X11/fonts/misc does not exist or is not a directory
warning: /usr/lib/X11/fonts/misc does not exist or is not a directory

Do you have any idea why?

Thank you for your help,
Dean