If you run Google Analytics it was down briefly over the weekend. This does happen from time to time and it is why you need at least one, preferably two backups for your traffic statistics. I used Web Stat (another JavaScript tracker) and Deep Log Analyzer.
Don’t take a risk … a free version of your web stats is fine, but have at least one paid option and your main source, or as a backup. You’ll be happy that you did because you can’t make the right decision without ALL of the information.
The main reason I started the SEO Revolution was out of frustration. Frustration at all of the lies and misconceptions that are posted in forums, given as advice in teleconferences, and even taught in live workshops. "So why didn't all of this work?" " Why wasn't my site successful?" " Why am I still stuck in a rut?" 
Well, I have shifted to GoStats.com , I found Google really complicated to use. and here you have given me a new reason to be happy that I quit Google.