Amsn Freeze
Amsn is a free web live messenger having more or less the same features as Windows Live Messenger.
Amsn version 0.94 is reputing to be a software from which the window freezes very often.
Solution
Try to close the application by crossing by clicking on the red cross. Habitually the command for closing application is :
killall name_of_program
However with the amsn , the above function does not apply to as the file launching amsn is supported by a shell environnment called « wish ».
The command to close the amsn when same is freezed is :
killall wish 
Amsca.it