Google safe browsing suggests Google.com is a malicious domain

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Google safe browsing prevents Googlers from entering malicious websites and getting infected. It is a widely used and reliable tool. I was surprised to see Google safe browsing point out Google.com as a malicious domain. The same goes from Yahoo.com.

http://www.google.com/safebrowsing/diagnostic?site=google.com

It's not to be taken seriously but it is indeed very odd. One of the possible reasons for these false positives can be that these sites save some data on a user's PC. What are your views on this ?