Version:            (using KDE KDE 3.1)
Installed from:    Slackware Packages
OS:          Linux

This problem only shows up when all of the following conditions are met:

1. The fcitx XIM input method is started before starting kde
   My specific configuration is:
    - LANG=zh_CN
    - fcitx version 1.7 or 1.8.5
    - start fcitx from $HOME/.xprofile, my .xprofile looks like this:
-----------------------------------------------------------------------
if [ "$LANG" = "zh" -o "$LANG" = "zh_CN" -o "$LANG" = "zh_CN.GB2312" ]
then
  export XMODIFIERS=@im=Chinput
  /usr/bin/fcitx&
fi
-----------------------------------------------------------------------

2. uncheck "Diaplay content in resizing windows" in the Window Behavior configuration dialog.

3. resize a model dialog window(like the File Bookmark dialog in Netscape/Mozilla)

KDE hangs when all 3 conditions are met. I could switch to virtual console by press Ctrl-Alt-F1, then kill the X server from there.