I read in another thread (http://www.raspberrypi.org/phpBB3/viewt ... =28&t=6771
) that the problem was thought to be isolated to Debian. I did some testing last night with Archlinux, and found similar problems:
Archlinux (current build from download page, brought up to date with pacman -Syu)
Pi connectivity: Ethernet cable to switch; USB port to powered D-link DUB-H7 hub; hdmi to hdmi monitor.
In hub: Basic Dell wired Mouse, Basic Dell RT7D50 keyboard, unmounted memory stick, un-driver'd Edimax EW-7811UN Wifi dongle
Pi microusb power directly connected to hub's 3A rated power input.
Test; results multiply repeatable:
10 Ethernet connectivity OK.
20 Started up mouse with gpm -m /dev/input/mouse0 & other options as per default config file -> mouse worked, but no connectivity through ethernet
30 Stopped mouse with gpm -k -> ethernet connectivity restarted
40 goto 20