I don't think so, but when you put google.com in your address bar the actual IP it will point to is in cluster and some time cluster are out of sync. There are more than dozen ip in cluster for google.com for load balancing purpose. Means one is not having same data as other one but they do resync it to get consistent result. Don't worry it will come
I have even seen for a short time that it had a sub page as the highest PageRank for the site - this was for a few dozen of our sites. It refreshed a few days later and showed the home page as it should. I just think it is a hiccup in the system and not a roll back. Just my opinion.
In a few cases, we're not showing the latest date for the home page crawl in webmaster tools right now. We're working on this and should have it corrected shortly. I'll keep you posted - I'm flying out to Vegas on Monday, but surely I can find wireless there, right? :)