Kirk,
It happens quite often during ingesting 3-4 cards at once
he is ingesting multiple cards at once. That is the reason for having multiple instances of "/Volumes/EOS_DIGITAL", "/Volumes/EOS_DIGITAL 1", etc
I verified this with inserting 3 cards out of a Canon cam into my card reader(s).
Ingesting and ejecting works for me on OS X 10.8 with RC1
Sven
[attachment deleted by admin]