I have the following problem: For about three weeks I've been experiencing connection losses, though I didn't change anything about my setup.
Modem: CN AR801 (provided by ISP). Router: Linksys WRT54GL (with latest firmware). Connected to these are my desktop machine (Win 7 64 bit), a rarely used Xbox (both wired) and my phone (wireless). As I said, I didn't have any problems until a few weeks ago.
The connection losses occur quite irregulary. Sometimes it happens every few minutes, then nothing for several hours. I can still reach the router when it happens, and I get a 'PPPoE authentication fail' when trying to reconnect. After a few tries, it usually works again. Rebooting the computer (without resetting Modem and/or router) also seems to work everytime.
I think removing the router from the equation prevents disconnects, but I'm not entirely sure, due to the random timing of the problem.
Is it likely that this is a problem with the router? Or could the ISP have changed something on their side (authentication-wise)?