system error

dear all

i have found the below error in the messages of solaris server
does any one know what about this error ??

/usr/dt/bin/ttsession[19234]: [ID 862433 daemon.error] child (19260) exited due to signal 1

Signal 1 is SIGHUP or HUP (do man kill to read more about signal numbers)
HUP is shorthand for hangup. ttsession is a ToolTalk session. ToolTalk is
used by CDE (Common Desktop Environment) and many other applications.

Is ToolTalk working on your system?
Are you getting any other SIGHUP messages?