Installation upgrade errors--- HELP

[Jack Schneider <puck@dp-indexing.com>]

Hi, All
Does anyone have a recommendation as to: what do I do with this error???

root@Zippy:/home/jack# apt-get install
Reading Package Lists... Done
Building Dependency Tree... Done
0 upgraded, 0 newly installed, 0 to remove and 478 not upgraded.
3 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Setting up cron (3.0pl1-81) ...
Adding group crontab (106)...
groupadd: unable to lock group file
addgroup: `/usr/sbin/groupadd -g 106 crontab' returned error code 10. 
Aborting.
Cleaning up.
dpkg: error processing cron (--configure):
 subprocess post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of logrotate:
 logrotate depends on cron (>= 3.0pl1-53) | anacron; however:
  Package cron is not configured yet.
  Package anacron is not installed.
dpkg: error processing logrotate (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of adminmenu:
 adminmenu depends on logrotate; however:
  Package logrotate is not configured yet.
dpkg: error processing adminmenu (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 cron
 logrotate
 adminmenu
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@Zippy:/home/jack#





Thanks, if you can help!   Thanks anyway.

Jack