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Yeah no kidding! I just noticed that on a search term where I previously ranked #1 that yourdomain.com now ranks above me for a term that has NOTHING to do with yourdomain.com which is a parking like page. Why that would show up on page one of google and my site gets kicked to #62 I have no idea!

I'm going to "guess"  it's not the penguin but a url issue. I've moved around 20 sites to a different platform and it's never been a totally seamless transition as far as google is concerned (none of them Drupal however). Also check your sitemap. (the url that google thinks it is).  I think you may see a 404 error. Not sure if this is relevant but you might check out this known issue: Known Issues While Sub-pathauto works when drupal_get_normal_path() is called, if drupal_get_path_alias() is called, the hook to alter URLs is not invoked. Functionality that uses this function to compare things like page visibility settings will not match the sub-path processed URL. This is due to core bug #1248626: drupal_get_path_alias() does not invoke url alter hook while drupal_get_normal_path() does. Good Luck . From one hyperfocuser to another

Good start but I would add the following: Start following people/pages in your niche with high authority. Slowly start joining in the conversations, sharing information and encourage others to engage with you Encourage friends and colleagues to start using Google +. Hopefully they'll join, engage with others, and start following you. Link to your Google + page (and any other social media accounts you have) from your Twitter/Facebook/SEOmoz user profile/Rapportive etc accounts - anywhere you can possible connect with others

Godaddy is touting their new 4gh servers and also a premium dns that guarantees 99.9 percent up time.  Have you tested these?