06-13-2011 10:38 AM
06-14-2011 08:38 AM - edited 06-14-2011 08:39 AM
Thank you for posting your issue to the Logitech Community Forums.
If you have LCC installed then please install it and see if the trackball works then off the native drivers? If you do not have LCC installed then please install using the following link ftp://ftp.logitech.com/pub/techsupport/mouse/mac/l
Please post your findings.