A problem with pppd(?) and transfer speeds in Debian.
 

So, I don't know much about Debian and so forth, so some information you propably will need to help won't exist before you tell me how to get it.

So I try to make things as clear as I can. I'm running a Debian server with the newest pppd, and my problem is as follows;

My internet connection works fine, until network speeds hits the maximum amount it can get (about 1.25Mbit/s for a 10/10Mbit VDSL). After that, the connection lasts about 2-5mins before pppd hangs up the modem and redials after a while. Now you can understand how irritating this is since I have no clue whatsoever what's causing this.
So there's _nothing_ wrong whatsoever with the connection, save for the drops with maximum transfer speed.

I'm also using shorewall as a firewall, if that helps.

I also tried roaring penguins pppoe-software but to no avail. The same damn drop. So I'm wondering if there's anything I can do about, or is there anything for Debian that would allow me to set a maximum transfer speed to say, 1.1Mbit/s so it wouldn't hangup the modem spontaneously after someone downloads something.

I'll be happy to answer any questions that'd help you to help me.

Out, lepakki.

It seems that it doesn't need to be maximum transfer speed, only a heavy load.
Shouldn't Woody be more stable than this, or then again, could it be a hardware issue?