[rolfus]

i have installed logitechs itouch control center and after the install my mouses(logitech MX510) buttons didnt worked, and the itouch appeared in the control panel. is there any way i can delete it from there? i dont want to reinstall OSX, so i hope that someone can help me.

[Cadaver]

Most Logitech software I've seen includes a removal tool.
Run that, then reboot.
Otherwise, the Logitech preference pane (control panel) will be in either /library/preference pane or (your username)/library/preference pane. Drag that to the trash. There's usually a kernel extension though for Logitech's keyboard/mouse software, and I'm not sure what that will be called, so probably best to simply use the uninstaller included with the software.