I have 16 WordPress blogs. All of them had NewStatPress. Once they were updated to WordPress 3.5.2, I had to remove NewStatPress from each of them. Slow loading websites and lots of server errors. My host, DreamHost, told me I might have to upgrade to a VPS. Took a while to troubleshoot it and find that NewStatPress was the problem. It was eating up all my server RAM allocation.
This is a bad situation.