rogerd - 9:20 pm on Aug 29, 2011 (gmt 0)

Have you tried a site: search to see if it's a ranking issue or if the pages aren't indexed at all, i.e., you really have just one page in Google?

One thing to check: be sure you don't have a noindex or nofollow robots tag on your posts. On one WP install, I upgraded a theme and didn't realize that the new version had some new SEO features, and that the default robots meta tag was set to nofollow.