I had the pleasure of test-driving the package when it was still Urchin. It's put together very well, and ties in to Adwords campaigns. When I saw that Google had released the service for free, I immediately signed on and created some tracking for a few web sites that I own. This was over 48 hours ago. It's still not working! I wrote to Google asking for some help. This is what I got back:

From: "Analytics Support" <
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Subject: Re: [#38618476] Not tracking after 48 hours

Hello,

Thank you for your email.

We understand that you aren't seeing data in your reports,
even though you your tracking code has been set up for over 
six hours. We apologize for any inconvenience.  We have 
collected your data since you installed the tracking code on 
your site, and are continuing to collect this data throughout 
the day.

We are currently in the process of creating reports from 
your data. You should be able to see your reports populated 
with data later today. Please note that this reporting delay is 
associated with unexpected demand for Google Analytics. 
Under normal circumstances, the data in your reports will 
be at most six hours old. 

For additional questions, please visit the Analytics Help 
Center at http://www.google.com/support/analytics. If you're 
unable to find an answer to your question on our site, please 
feel free to reply to this email.

Sincerely,

Analytics Support