I've never had trouble accessing U.S. Census records for 1850 - 1870. However, for the past week or so it's completely unfindable on the familysearch.org website. Why is this?
Clearing cookies and updating your browser may help. You can also try another browser.
Here are some links that will help with the above suggestions:
Note that the browser needs to be the current version or the previous version.
Try clicking on this link:
You can type in some on deceased ancestor information and if it has been completely indexed you can find information. Or you can look browse image section.
Hopefully this will help.
They're all still exactly where they've been, so perhaps this is indeed a time to try the oft-repeated advice about cache and cookies. (I'm convinced that most of the time, it only works because it takes time, but this may be an exception to that.)