squid security and bug fix update

7:2.6.STABLE21-6 - Resolves: 561828 - CVE-2009-2855 CVE-2010-0308 squid various flaws rhel-5.5 7:2.6.STABLE21-5 - Resolves: 538738 - improved patch 7:2.6.STABLE21-4 - Resolves: 521926 - squid 'stop after stop' is not LSB compliant - Resolves: 496170 - Add arp filter option - Resolves: 516245 -...