The iBook has been giving some trouble after a year in service as a wireless base station.
First the airport card started failing as the coverage of the wifi network started getting smaller. It is detected in the system profile and can be accessed from the system preferences pane except for not having any wifi output. The airport card finally stopped working over time.
The iBook also recently started freezing frequently. After spending the afternoon taking the iBook apart, the hard drive was tested and found to be working perfectly. The memory is working fine as it was swapped and tested with other spare memory chips.
I guess the logic board is causing the problems.