Seeing a problem - intermittent, random, but recurring - where Indigo + JBT M4 crashes in JBoss Central - sometimes while refreshing the news, other times while looking at preferences. No real pattern yet. Has anyone else seen this?

only clue is:

(npviewer.bin:4218): Gtk-WARNING **: Unable to locate theme engine in module_path: "clearlooks",
Gtk-Message: Failed to load module "canberra-gtk-module": libcanberra-gtk-module.so: cannot open shared object file: No such file or directory

But - and this is on RHEL6 - it is installed:

$ rpm -qa | grep libcanberra
libcanberra-0.22-1.el6.i686
libcanberra-0.22-1.el6.x86_64
libcanberra-gtk2-0.22-1.el6.x86_64

strace and .log files attached