xfce4-notes-plugin needs to be rebuilt against the current version of xcb-util. This addresses the recent forum post
http://forum.salixos.org/viewtopic.php?f=15&t=6640
'''Homepage:'''
http://goodies.xfce.org/projects/panel-plugins/xfce4-notes-plugin
'''Package:'''
http://people.salixos.org/laprjns/xfce4-notes-plugin/xfce4-notes-plugin-1.7.7-x86_64-3gv.md5
http://people.salixos.org/laprjns/xfce4-notes-plugin/xfce4-notes-plugin-1.7.7-x86_64-3gv.txz
'''Package:'''
http://people.salixos.org/laprjns/xfce4-notes-plugin/xfce4-notes-plugin-1.7.7-i486-3gv.md5
http://people.salixos.org/laprjns/xfce4-notes-plugin/xfce4-notes-plugin-1.7.7-i486-3gv.txz
'''Source:'''
http://people.salixos.org/laprjns/xfce4-notes-plugin/SLKBUILD
Thanks Rich!