I just updated from 7.2 to 8.0 RC1, rebuilt all installed ports(including KDE 4.3). Everything works except the mouse. KDE's system settings tell me that "Shared object libusb-0.1.so.8 not found". Then I checked /usr/ports/UPDATING and followed 20090309, but pkg_info output is "no match" that I understand as "no libusb-* in /db/pkg.
So I don't know how to get the mouse working (and don't know how to solve the libusb problem).
So I don't know how to get the mouse working (and don't know how to solve the libusb problem).