> please try hard to not break threading. It is better to resend a message > instead of forward it. Sorry - it's not easy with only outlook <cough> to work with. > > > > > > cannot submit datapipe for urb 0, error -28: not enough bandwidth ... > > > > I looked around and found a couple of kernel patches that "fixed the issue in most cases" > > > > http://marc.info/?l=linux-usb&m=131973404328622 > > > > and "Fix a regression that was introduced by commit" on ehci-sched.c > > > > ..but both these kernel patches have been applied to the 3.0.21 kernel > > I'm using on both the dell e6220 and the mac mini > > > > Does anybody have a suggestion as to what else I could try? > > You should contact the linux-usb list and/or report a bug to the Linux kernel > bug tracker. I guessed something like that might be the answer - time to give up methinks. Thanks for the help thus far.