I'm not sure if this is a bug or something else on my system causing the problem. Tonight I ran CCleaner version 1.26.218 and below is a report from my Nortons Firewall: Outbound UDP packet. Local address,service is (My Full Computer Name(192.168.0.2),0). Remote address,service is (My ISP DNS IP address,domain(53)). Process name is ""C:\Program Files\CCleaner\ccleaner.exe""." Nortons recommendation: Block access... Any ideas as to why Nortons Firewall would recommend blocking access?