[LAU] Fluidsynth basic experimentation: buffer overruns

Hi, I'm experimenting with fluidsynth at its simplest form, that is, directly from the command line and using the fluidsynth shell. So I start fluidsynth like this: fluidsynth -m alsa_seq -a jack /usr/local/share/SF/Unison.sf2 Jack is already started using qjackctl. As soon as I use qjackctl to connect a MIDI keyboard to that fluidsynth instance, the following messages are shown by fluidsynth, non stop, wohtout even playing a note: fluidsynth: warning: ALSA sequencer buffer overrun, lost events The MIDI kyb is connected via a M-Audio 1010LT card. Are these messages important and if not, how to make them go away without altering the source code ? Thanks.