not an epiphany bug. epiphany is using the freedesktop database, applications declare they handle a MimeType from their .desktop, GNOME launchs the preferred applications corresponding to the type
/usr/share/applications/sun-java6-javaws.desktop has "MimeType=application/x-java-jnlp-file;" so it's used on the file which is from that type, and the .desktop uses "Exec=/usr/lib/jvm/java-6-sun-1.6.0.00/bin/javaws -viewer" so the GNOME apps run "/usr/lib/jvm/java-6-sun-1.6.0.00/bin/javaws -viewer URI"
not an epiphany bug. epiphany is using the freedesktop database, applications declare they handle a MimeType from their .desktop, GNOME launchs the preferred applications corresponding to the type
/usr/share/ applications/ sun-java6- javaws. desktop has "MimeType= application/ x-java- jnlp-file; " so it's used on the file which is from that type, and the .desktop uses "Exec=/ usr/lib/ jvm/java- 6-sun-1. 6.0.00/ bin/javaws -viewer" so the GNOME apps run "/usr/lib/ jvm/java- 6-sun-1. 6.0.00/ bin/javaws -viewer URI"