Hi, everyone.
I upgrade kdelibs today(3.5.9-3-i686), then all the kde related
applications cannot start.
The error message is like this:
konqueror: symbol lookup error: /opt/kde/lib/libkdeui.so.4: undefined symbol: _ZThn40_NK10KColorDrag6formatEi
kmail: symbol lookup error: /opt/kde/lib/libkdeui.so.4: undefined symbol: _ZThn40_NK10KColorDrag6formatEi
...etc.

I use fvwm now, the  non-kde-related applications works well, such as firefox, So I guess it is the new kdelibs' fault.