gtk_label_set_text() not working .

[Amith <amith multitech co in>]

hi all,
                     I'am a newbie here. i'am developing a user agent 
client , for a Telephony application using GTK+-1.2. The whole 
application has 5 threads running , i try to update a label , with 
gtk_label_set_text () , when some event occurs in the application , but 
it doesnt seem to take affect . When i use it with a debugger and when i 
single step code , everything appears to be fine . Could someone help me 
to overcome this problem.

Thank you.

cheers,
Amith