Swanson - 9:41 pm on May 1, 2011 (gmt 0)
The cache has no relevance to the actual latest page that Google is using for ranking.
You guys will only think that if you are using blog based content or other "fresh" based site structure.
I have only ever seen the current date in the description snippets (because I use the date in my description tags) and then click on the cache link and it is 2-3 days older.
This is a different datacentre issue.