PI hangs or network hangs?

[Fabio72]

As was mine, before putting instructions to write right values in rc.local
Now you will see an invalid offset error also in your dmesg

This github issue is closed since long time
https://github.com/raspberrypi/linux/issues/151

I don't know if is still a bug cause I cannot see any error logged when my pi hangs. And I don't known what really happened cause the network is unreachable and usb keyboard is not able to awake xbian from black screen.

I also found this discussion in google groups
https://groups.google.com/forum/#!msg/piwall-users/xvamuVOOaRk/j0VdVws9v9UJ
It seems similar: network freeze whitout errors in log