ISP Internet Halt/Block Until Mac Reboot?

[pnkearns]

I've been using Transmission 2.61 for torrents on my MacBook Pro, OS/X 10.7.4 with a WiFi connection to my cable modem.

Recently I'll start it off Transmission at night and come back the next day. It may have completed a torrent file or two. However, when I come back in the morning torrent downloads are at 0 and the Internet is dead. When I open up System Preferences - Network - WiFi and run Assist Me Diagnostics, I get green all the way to ISP, but Internet & Server are Yellow. I can run he Diagnostics repair but it does nothing. The only way I've found to fix this - and I may be just timing out the problem - is to reboot my system once or twice, reboot the WiFi and cable modem (power on/off), and then run the Diagnostics a few times until it seems to just get through. Once through, I'm good on the Internet to go for the day... as long as I don't run Transmission for a torrent.

Anyone have a clue what's going on here?
MacBook Pro, Mac OS X (10.7.4)

[pnkearns]

"Limit speeds to 60% of available. Set global connections to 100 or less with max 10 active torrents. Try disabling DHT and µTP."

It appears the culprit is DHT.
I switch that off while the MacBook Pro network diagnostics were open and got immediate switch from ISP-Internet-Server parts of the network being red to all green.
Thanks much.

[funkahdafi]

This is a problem that's years old. I think it exists ever since v1.9x. Transmission *completely* kills the Mac OS network stack, all connections break. There is only one solution to this: Stop using Transmission. They weren't able to fix these bugs in ages so the software must be fundamentally flawed. Time to move on.