This is an easy fix and highlights a huge issue again with Linux and Flash still not playing nicely/working as well as Windows yet.
Solution - Go to "about:config" and disable the two entries (set them to false):
dom.ipc.plugins.enabled.libflashplayer.so
dom.ipc.plugins.enabled.libnptest.so........
This is obviously a bug in the r8169 kernel module and it seems to affect a lot of people. I upgraded to the latest kernel and hope this won't happen anymore, as it is a very serious error. This is especially serious for those who are running servers with this chipset, who can afford for the NIC to randomly go off-line for no apparent reason?
[655548.189113] type=1505 audit(1277067560.902:5): operation="profile_load" name="/usr/bin/freshclam&q........