Mystery uTorrent Failure

[agc]

I am sorry to trouble the good people of this forum, but I have little recourse but to ask your help. I have been using uTorrent for some years and have generally gotten good results, but now nothing downloads at all.

appearance of uTorrent itself:

Some torrents are able to connect to the tracker. Some are not. Some show seeds and peers are present. Some do not. The ones that do, under the General tab, show "Seeds: 0 of 0 connected (114 in swarm) Peers: 0 of 85 connected (7 in swarm)," "Seeds: 0 of 0 connected (283 in swarm) Peers: 0 of 369 connected (29 in swarm)," and "Seeds: 0 of 0 connected (47 in swarm) Peers: 0 of 61 connected (1 in swarm)." These are the three test torrents I downloaded from the OpenOffice, Slackware, and Ubuntu sites listed under "Test Torrents." The ones that could not reach the tracker claim to have no seeds. These three were MPlayer-related torrents I downloaded from the Depthstrike website. I had several other torrents running, but I stopped all of them before loading these so that they would not interfere with testing. I have tested my connection, and the test reports, "Results: Upload: 734.0 kbits/s (89.5 kB/s) Download: 11.63 Mbits/s (1.3 MB/s)" and "Results: Port is open. Your network is properly configured." Note that I followed the port forwarding guide to manually set a static IP address and a fixed port prior to this. All torrents report upload and download speeds of 0, but the totals at the bottom of the screen show small values that change from moment to moment, such as "DHT: 334 nodes [white check mark on green circle] D:0.6 kB/s O:0.4 kB/s T:310.9 MB U:0.5 kB/s O:0.3 T:160.8 MB." Under the Logger tab, the same error message keeps repeating: "[[timestamp]] WSAEnumNetworkEvents error (10038)"

what I have already tried:

First, I deleted dht.dat and dht.dat.old, as the FAQ suggests.

Second, I followeed the FAQ's suggestion to load a torrent from Depthstrike.

Third, I manually set a static IP address and set up port forwarding on my router as per the instructions in the port forwarding guide. As stated above, uTorrent reports the port is open and gives positive results on its speed test.

Fourth, thinking my ISP, Time Warner Cable, might be interfering, I set "Options > Preferrences > BitTorrent > Protocol Encryption > Outgoing:" to :Forced" and unchecked "Allow incoming legacy connections."

Fifth, it occurred to me that the firewall might be stopping connections. My Windows Firewall is inactive. I had a free version of McAfee Antivirus that came with an Adobe download, but I have uninstalled it. The only firewall I currently have running is Norton Antivirus. I went to "manage firewall > Program Rules," set uTorrent's rule to "Allow," and pressed "Apply." I opened up the Norton 360 Security History and noticed that it was blocking incoming connections once every few seconds. The types blocked were UPnP discovery, SSDP, and LLMNR, so I went to "manage firewall > Trafic Rules," unchecked the rules "Default Block UPnP discovery," "Default Block SSDP," and "Default Block LLMNR" and pressed "Apply."

The Norton 360 has stopped reporting blocked connections in its security history, but no change has occurred in uTorrent.

Also, please note that I had not downloaded any new software immediately prior to the appearance of this problem. One day, the download speeds simply dropped off to nothing and did not return. Something similar had happened once or twice before, but restarting, changing the port number, disconnecting and reconnecting the internet cable, or simply waiting seemed to remedy it, but not so this time. I have run out of ideas and can only humbly ask your advice.

[Switeck]

It may be extreme, but the only way to rule out Norton is this:

http://service1.symantec.com/Support/tsgeninfo.nsf/docid/2005033108162039

http://us.norton.com/support/kb/web_view.jsp?wv_type=public_web&docurl=20080710133834EN

Do the test torrents mentioned in 1st link in my signature download fast? (...like they should!)

[agc]

Update:

The problem seems to be resolved for now. I turned uTorrent off over the week before Christmas. During that time, I used a different bit Torrent client, simply called BitTorrent 7.2, which functioned without problem. Today, following the advice in one of the links above, I upgraded uTorrent to the latest version, and it is also working as it should. While I am curious as to what went wrong before, I do not have time to investigate right now. Thank you for your timely reply.