"Do'h!" I should read the error message more carefully. The table was marked as crashed. REPAIR TABLE `serendipity_entries` should solved the problem. Thank you for the fast response!

If I try to save an edited entry I will get the following error message:

Error:

UPDATE serendipity_entries SET id='26', title='Heavy problems with RMI - solution found', timestamp='1113736816', body='

While reading an \"old\" tutorial at http://java.sun.com/docs/books/tutorial/rmi/running.html I ...