[OpenIndiana-discuss] thunderbird writes cores

[Carsten Grzemba]

My thunderbird 45.6.0 on hipster writes core files, but the stack is not clear for me:

fef01035 __pollsys (8046b20, 1, 0, 0, fe69fb90, 8046c20) + 15
 fee92f36 poll (8046b20, 1, ffffffff, feef51b6) + 66
 f915a705 _xcb_conn_wait (fe665000, 8046be0, 0, 0) + 95
 f915c740 wait_for_reply (1075d, 0, 8046ca4, f9596000, fe656000, fe656000) + f0
 f915cac5 xcb_wait_for_reply64 (fe665000, 1075d, 0, 8046ca4, fe66500c, 8046ca4) 
+ 55
 f94a3f3f _XReply (fe656000, 8046d00, 0, 1, fe656000, 1) + 1af
 f21a1737 XScreenSaverQueryInfo (fe656000, 100, e43f8160, fc7daf42, f1ecdb8c, 0)
 + 87
 fc7daf4a ???????? (81000009, 11945c3, 3cec8300, 8b08758b, ac83, fc08500)
 ace85356 ???????? ()

Why is TB interested in my screensaver? 
What is so terrible on my screensaver that TB cores?