The latest MyDoom variant released today is using search engines to scan and verify email domains. This variant has likely been the reason why Google has been useless all day. SANS Incidents reports on this problem and how the malware code is disrupting target search engines. Symantec and other anti-virus companies have updated anti-virus protection patches for this so please update your software ASAP. Google, lycos, yahoo and altavista search engines are effected.