bash-3.2# squid -z
2008/12/21 01:50:06| Creating Swap Directories
FATAL: Failed to make swap directory /var/cache/squid/00: (13) Permission denied
Squid Cache (Version 2.7.STABLE5): Terminated abnormally.
CPU Usage: 0.000 seconds = 0.000 user + 0.000 sys
Maximum Resident Size: 0 KB
Page faults with physical i/o: 0

http_port 8080
logfile_rotate 7
cache_mem 16 MB
cache_swap_low 95
cache_swap_high 98
maximum_object_size 1000000 KB
cache_dir ufs /usr/local/squid/var/cache 5000 16 256
access_log /var/log/access.log squid
cache_log /var/log/cache.log
cache_store_log /var/log/store.log
acl all src 0.0.0.0/0.0.0.0
acl local src 192.168.1.0/24
acl local2 src 192.168.2.0/24
http_access allow local
http_access allow local2
http_access deny all

bash-3.2# chown proxy /var/log/squid
bash-3.2# /usr/sbin/squid -z
FATAL: getgrnam failed to find groupid for effective group 'proxy'
Squid Cache (Version 2.7.STABLE5): Terminated abnormally.
CPU Usage: 0.007 seconds = 0.000 user + 0.007 sys
Maximum Resident Size: 0 KB
Page faults with physical i/o: 0
Aborted