cron runs services acording to a schedule. That's its job. If you look at the error message it's actually cron starting xdm that is failing. I believe that xdm is a generic x-windows graphical login manager. You are probably using kdm or gdm anyway...
Inet may be failing due to your security level. Inet controls who accesses your system and from where. I'd bet you have your security set too high for it to run properly.
Hotplug is a USB services daemon. It checks the ports for recent activity and connects the devices it finds. You may be running two conflicting USB daemons if it is failing, at least that is what I am lead to believe...
CUPS is the printing services daemon (Common Unix Printing System). If you don't print, no problem. Again, I'd bet it is your security level again.
As for nscd:
GNU C Library: Name Service Cache Daemon
A daemon which handles passwd, group and host lookups for running programs and caches the results for the next query. You should install this package only if you use slow Services like LDAP, NIS or NIS+
Describtion taken from:
All in all, I'd bet you have your security set too high if you are just using your machine as a desktop computer and acessing the internet (not used as an internet server for your home or business LAN).