ADSL modem having issues...

I've been lately having an issue with my ADSL modem (Billion 5100, ISP is Internode) where I'll lose connection (and won't be able to ping the modem), but all the status lights on the modem are on and the network ports connected to it are still lit up. I can only fix it when I reboot the modem.

It worked perfectly for 18 months, and I have no idea why it's playing up. It also is affecting the other computers in the house.

Does anyone have any idea what the problem could be?

You're up late too, eh?

Don't know if it could be anything to do with the power supply capacitor problems I suspect my Speedtouch is starting to have:

http://forums.windrivers.com/showthread.php?t=74677

Or had it plugged in during any of the storms lately?