Comment 2 for bug 1228627

StacktraceTop:
 SmcInteractDone (smcConn=0xaaaaaaaa, cancelShutdown=0) at ../../src/sm_client.c:492
 xsmp_interact (smc_conn=0xb852eb80, client_data=0xb852a090) at xfce-sm-client.c:1200
 _SmcProcessMessage (iceConn=0xb8531920, clientData=0xb852eb80, opcode=6, length=0, swap=0, replyWait=0x0, replyReadyRet=0xbf9ba678) at ../../src/sm_process.c:290
 IceProcessMessages (iceConn=iceConn@entry=0xb8531920, replyWait=replyWait@entry=0x0, replyReadyRet=replyReadyRet@entry=0x0) at ../../src/process.c:386
 xsmp_process_ice_messages (channel=0xb852eae0, condition=G_IO_IN, client_data=client_data@entry=0xb8531920) at xfce-sm-client.c:800