There is a fix related to the OSD (for example sound stuff or other messages) in http://anonscm.debian.org/gitweb/?p=collab-maint/mupen64plus-core.git;a=blob;f=debian/patches/osd_memory_corruption.patch;h=4c4d410dcd8e6abfb481181346d4a2a0f075f4e1;hb=HEAD
The rest sounds more like a xorg/driver bug
There is a fix related to the OSD (for example sound stuff or other messages) in http:// anonscm. debian. org/gitweb/ ?p=collab- maint/mupen64pl us-core. git;a=blob; f=debian/ patches/ osd_memory_ corruption. patch;h= 4c4d410dcd8e6ab fb481181346d4a2 a0f075f4e1; hb=HEAD
The rest sounds more like a xorg/driver bug