Here is the problem. Whenever I use utorrent on the desktop it slowsdown internet eventually causing total shutdown. As soon as utorrent is turned off the internet is back to normal. This is in a short span of time. If I leave it long enough I have to reboot the router and the cable modem to get things back to normal.

It happens irrespective of the bandwidth used by utorrent. The last few times utorrent was downloading at 50kb/s. The upload speed was controlled at 20kb/s. Anything more than that seems to reduce download speeds. My connection is tweaked and gives me max download speeds ranging between 500 and 550 kb/s. utorrent connections are set at a max of 200 and 50 per torrent. I get excellent download speeds when I use utorrent so I think its settings are ok. Max half open connections are set at default of 8. I haven't changed any of the default settings in advanced section. I am using version 1.5 since 1.6 seems to be using more ram. Version 1.6 caused the same problem.

I have two computers connected to the internet via a wireless router. Desktop is hardwired to the router and the laptop is connected by wireless. The router is USR 5461. The ports are forwarded properly. I get a green light indicating the ports have been forwarded correctly. The ports I have tried using range between 32000 and 33000.

I have a 5 mbit cable internet connection. Everything stays fine as long as I don't use utorrent. So utorrent is causing the router to shutdown. I receive a timeout response from the router when I do a tracert to any site. So the solution is to stop utorrent from doing whatever its doing to the router causing it to shutdown. But I have no idea what to do to stop this from happening. I have tried googling and the solutions offered have not made any difference.

Anybody with similar experience ? If you managed to solve this problem please let me know about the solution. Any help/suggestions will be greatly appreciated. Thanks for reading.

torrent takes a LOT of bandwidth and opens a LOT of connections
esp. in XPSP2, if you max out the TCP/IP stack, your internet wont work very well (SP2 limits the half-open connections to 10)

I experience the same problem with Azureus.

Becomes a common problem; with the upload bandwidth maxed out, download bandwidth will become severely limited, because outgoing commands can't be sent as fast for webpages, etc

Yeah I've noticed this too.

Thanks for your response guys.

I have taken efforts to make sure the upload bandwidth is not maxed. I have upload bandwidth up to 50kb/s. I have capped it at 20 kb/s so that upload does choke my download speeds.

Also I have limited the total number of connections [Global] to 100. I think my connection should be able to handle that.

I have managed to slow the ultimate crashing of my connections by disabling DHT. That seems to have delayed the end result but has not stopped it from happening.

I am really hoping somebody will be able to tell me how to stop this annoying problem....

Well, you can't.

Same here with both Azureus and uTorrent. Found ABC to be about the only program I can run on my comp (actually my computer 2, none work well or at all on my main system) with too many problems though I do notice a slow down in my downloads and surfing.

You need a better router. I had the same issue with my crappy linksys but when I went to my ipcop router all problems, including some vonage issues were solved.

see its not always your ISP's issue....

lol sorry i have so many customers blaming the ISP (the company i work for) for there crappy voip service.

i run my bit torrent client on a seperate system(sits in the basement with no key board mouse or moniter), that way it doesn't slow down my main computer, and it leaves enough bandwidth for my system on my router/cable connection at 10mbit down and 1 mbit up