Web Analytics Health Alert

I have the same.
New sharepoint 2010 farm

The health analyzer is complaining that the WebAnalyticsService is running with elevated privileges.
This is correct the Web Analytics Data Processing (windows service) is running under domain\spfarmadmin account.

How can I resolve this I read that changing this to a normal domain user break web analytics is this correct?
Do you use a new domain user for web analytics data processing (windows service) and what permissions does this account need then?