Apple acknowledges a bug in the USB subsystem of Intel Macs running OS X 10.4.8. This will only apply if someone has not moved to a later version of the Mac 10.4 OS. This issue has been resolved by moving to the last version of 10.4, which is 10.4.11.
Symptom: When an i1 is attached to a v2.0 USB hub, the application may wait (hang) forever. This is specific to Intel Macs running OS X 10.4.8 only.
Workaround: Remove the i1 and reconnect. If this fails, attach the i1 directly to the Mac or use a v1.1 USB hub.