Bus Error

[Eildert Groeneveld]

During a opkg upgrade apparently the network connection stopped because the FR
fell asleep (my rendition of what happened).

After booting everything was fine, except that I cannot connect anymore to the 
FR through USB.

If usb0 gets uped through ifconfig, I get the same: bus error

Any idea of what might have happened and how the situation can be remedied 
(other that reloading the root file system?

greetings

Eildert