I upgraded lubuntu from 10.10 to 11.04 and my mouse pointer lost its acceleration. So I go menu > Settings > Keyboard and Mouse to activate lxinput, which manages settings for keyboard and mouse for LXDE. But I can't adjust anything; if I move any of the sliders, any amount, with either keyboard or mouse, it closes. Running it in terminal, I find it closes with a segmentation fault. Is there a fix or alternate GTK mouse configuring utility I can use?