Comment 52 for bug 1208993

Kevin de Bie (abramech) wrote :

Seeing the same issue on 16.04 on an early 2009 iMac with 8GB's of RAM and an SSD. (the last two things are unconventional for this model, as is the prescence of Ubuntu instead of OSX i guess)

The workaround proposed in asnwer #6 seems to at least prevent my system from locking up during file transfer. (so far)