Has anyone else been seeing a lot of cache dates of Dec 31st 1969 on any of their pages. I have found several pages within my website with this cache date.

Any ideas as to what this is about? Also if google is issuing this type of cache date and we know that google gives weight to the age of a website, wouldnt this cause google to see a website as being older than it truly is if they use their data to determine the age of a website through cached pages?

It has been reported and discussed in various systems, you can find lot of information here;

http://www.google.com/search?hl=en&lr=&safe=off&c2coff=1&q=google+cache+Dec+1969+

Unix time stamp starts from Jan 1st 1970, This data is the day before it, SO probably a glitch in the system, nothing to worry about it will sort itself,