I've recently started work on a customers SEO. He was ranking 37 for a not-very competitive niche. Easy I thought.... After looking at his site, EVERY single page (26) has the same TITLE tag set, and DESCRIPTION tag. So, I methodically went through them correctly changing them to sensible, correct length titles and descriptions, each containing the targetted keyword once, so that every page has a now has a unique title and description. To my horror, 48 hours later the site has gone from 37 to 460!!! Do you think this could be just a Google Dance, or is it cause for major alarm?