[mythtv-users] [Warning] './mythconverg/settings' had no or invalid character set

[Bemer]

After my upgrade to mythtv version 19 I get alot of errors in my /var/log/mysql/mysqld.err like the one below:

060622 18:54:52 [Warning] './mythconverg/settings' had no or invalid character set, and default character set is multi-byte, so character column sizes may have changed

In my mythfrontend.log it looks like this:
2006-06-21 17:14:28.339 DB Error (Insert Keybinding):
Query was:
INSERT INTO keybindings (context, action, description, keylist, hostname) VALUES ( 'TV Playback', 'SPEEDDEC', 'Decrease the p
layback speed', 'J', 'HTPC' );
Driver error was [2/1062]:
QMYSQL3: Unable to execute query
Database error was:
Duplicate entry 'TV Playbac-SPEEDDEC-HTPC' for key 1

What has gone wrong? and how do I  correct this?