net drops while others in the same network download something or browse the net !!
 

I have small network consists of me and 2 others, the net drops when others browse the net or download something.
The net drops that makes my msn disconnect and if im downloading something it stops.

- The speed that I have is 1mb\256
- I have a Tp-link router model:TD-8840
- Im using ubuntu linux 9.04 and the other using windows xp and 7
- Others dont use netcut or any of this stuff
- When im alone on the network (other closing there computers) the net is working fine

I called the ISP about this problem but they told me that we dont have to fix network problems maybe its a virus on the network or something :S

It may be that for some reason the router is giving preference to the programs on the Windows machines. This is probably some form of traffic shaping. Many routers have some advanced settings deep down in the menus that deal with QoS (Quality of Service) that grant priority to certain things like VoIP. You might fiddle with the settings on the router and see if you can get something like an "equal bandwidth for all mac addresses" type setup (or give your machine a higher priority :D).

1st thanks for replay pljvaldez
I found this thing that called (Quality of Service)
but I cant deal with it
here is the screen shot of the page

I'm not an expert and most of that screenshot is greek to me. Maybe someone else can explain some of those terms and what they should be set to.

My router has something similar (not exactly) to this. I can just enter my machines MAC address and give it a HIGH priority. I can also specify applications/ports with high priority.

Are you sure one of the other hosts on your network isn't stealing your IP address?

The problem is it happen with the 2 of them
and the 2 of them dont know how to install windows, I dont think that they can steal my IP or something like that

They may not be doing it intentionally.

It's worth a quick test next time it happens:
Then try pinging your own IP address and see if you have multiple hosts replying to the arp who-has query.

here What I got when I typed the command until the net drops
My ip address is 192.168.1.2 and my mac address is 00:1A:4D:8E:B5:DC
the others have 192.168.1.3 & 192.168.1.4

That output looks OK. Your host / MAC address was the only reply to the arp queries. So, red herring.

When the other hosts come online, and you lose your 'net connection, does that mean you can't access your router any more? Or does it mean you only can't access hops beyond your router?

Next time try:
Any reply?

Then try:
Any reply?

I dont lose my net connection its only a drop for 2 seconds or something like that when someone els using the net at the same time, I mean when the other one sharing the bandwidth with me at the same time the net drops happen, after that I can access any thing like normal but if I'm downloading something it stops and my msn and skype disconnect and connect again.

I hope I make you understand the situation, sorry for my bad english :S