pidgin problem

[Magicloud Magiclouds <magicloud.magiclouds@gmail.com>]

Dear all,
   I am using unstable brench. Today I did an "apt-get update; apt-get 
upgrade; reboot", then my pidgin can not response to keyboard at all. I 
can not key in anything, but my mouse works well (click, and paste text 
by right-click menu). And all other programs (firefox, and so on) have 
no problems.

Thanks.