The new Health Analyzer in SharePoint 2010 is great and you should always try to clean up all errors in this list. One error I had after installing the RTM version of SharePoint Server was:
[MissingWebPart] WebPart class [8d6034c4-a416-e535-281a-6b714894e1aa] is referenced [X] times in the database [...AdminContent...].
There are many suggested solutions to this problem on the internet (Accessing search administration, Querying the database, setup SharePoint Foundation Help Search and crawl help files)
What worked for me was accessing these search pages in the help-site-collection in Central Administration. (just ignore the error about missing list).
After that just reanalyze the issue in the Health Analyzer and hopefully it will dissapear.

February 26th, 2011 17:06
Thanks a bunch, all the other suggestions didn’t work, this did!
March 16th, 2011 15:06
Thanks for the info, worked like a charm!
March 23rd, 2011 14:19
All the other suggestions didn’t work, this did! Perfect !
Thank you.
April 13th, 2011 12:41
What helped for me was running the Farm Configuration Wizard again.
July 8th, 2011 01:20
Thanks re-post http://blog.isaacblum.com/2011/07/07/missing-server-side-dependencies-8d6034c4-a416-e535-281a-6b714894e1aa/
July 28th, 2011 09:03
All the posts with clicking:
http://{centraladmin}/searchfarmdashboard.aspx
http://{centraladmin}/SearchAdministration.aspx
didn’t work for me. What helped was clicking on one of the Help pages.
Thanks for this post which solved my problem.
October 10th, 2011 11:19
Your solution worked but, in my case, I also had to access:
http://{centraladmin}/SearchAdministration.aspx
Just my two cents.
March 1st, 2012 23:15
Worked as described and quick fix for my problem.
Cheers