need help! all application turns into TrackBall Game

i installed the eclipse and QQ, but when i clicked them, TrackBall Game came out, how could this happened。。。

can anyone help me, thanks a lot!

What OS 11.2 32bit /64bit 11.3 32bit / 64bit
What Desktop KDE or Gnome? or other?

You might look at kmenuedit if KDE to see if the app entry in the menu is pointed wrong…