I updated to 3.5.1 on January 25 and almost immediately daily traffic to my site (http://blog.newscom.com/) dropped by about a third and over the week it's dropped to half of what we were getting before. As I've gone through the Google Analytics about it I saw that starting from when I updated to 3.5.1 on January 25 my traffic from Google.com, Google.co.uk, and Google.ca has been nearly nonexistent.
Has anyone else noticed a problem like this? I can't figure out what would be wrong, but we're mostly a photo site, so perhaps there's something that changed with the image metadata on the update? Any ideas on where to look for a problem would be appreciated.