Hello Norton/Symantec. 
[I still use a Macintosh PowerPC with older X version 10.3.9, but my Mac has 640 MB of RAM. So I figure, “Why upgrade? To pacify Barack Obama? No-way!” ] On Thursday, 2 June with duty, I used LiveUpdate v3.5, from 2005. It grabbed 118.3 MB of Virus Definitions. Yesterday it found 117.9 MB. On 30 May, LiveUpdate found 117.4 MB. (Phew. That is a-lot, yes?) But once I downloaded each update, I sought new Macintosh viruses. But, THERE WERE NONE NEW. Please understand that I feel a-little suspicious of Norton/Symantec. Just how common are Macintosh Viruses, please? Thank you. P. S. Please don’t worry, Norton/Symantec. I feel that your products are Great! I’ve used Norton Antivirus some 25-years now.