It's very nice to hear the cause of phnomenon. > For now, please choose one from the following workaround. > * use qt-x11-free-3.3.6-fix-key-release-event-with-imm.diff patch > * temporary switch to direct IM in uim > * invoke uim-pref-qt with "QT_IM_MODULE=simple uim-pref-qt" Thanks, and I will try some. Best wishes, tomo.