http://bugs.winehq.org/show_bug.cgi?id=12680
--- Comment #2 from Matthias Derer webmaster@tonstube.de 2008-04-21 15:38:28 --- (From update of attachment 12373) In version 0.9.59, a patch by Andrew Talbot introduced the use of structs instead of memcpy. In the patch for dlls/winejack.drv/audio.c he obviously deleted a line which shouldn't have been deleted resulting in buffer underruns when using the jack driver in wine. I just "undeleted" the line (assigning wFlags to the output).