You should head over to the forums at Whirlpool. There is a specific Apple section and another dealing with modems, routers and other ADSL hardware.
Has the firmware been updated on the Billion?
What OS are you using on the Mac? Is it current? (10.3 or 10.4)
Wireless: the faster 802.11g (54Mbps ,also known as Airport Extreme in Apple talk) or the older one (11Mbps)?
Is the Billilon the only hardware, or are you using soomething else for you wireless network (e.g, Airport base station or other wireless router).
Can you elaborate on what is happening? Why the reboot?
- due to a lost ADSL line connection when the computer is idle?
- the wireless network being lost?
- happening when trying to transfer large files or use FTP?
If you have a telephone connected to the ADSL phone line, have you got an ADSL filter/splitter?
A cordless phone, is the phones base station located right next to the Billion modem?