Squid cache'ini tamamen temizlemeyerek yeniden baslatmak:

Centos'da:

# /etc/init.d/squid stop
# rm /var/spool/squid /var/spool/squid.old
# mkdir /var/spool/squid
# chmod o-rxw /var/spool/squid
# chown squid:squid /var/spool/squid
# /etc/init.d/squid start