µTorrent keeps Firefox from opening

[Soviet_Genius]

If I Have µTorrent running and I try to launch Firefox it just won't open. As soon as I close µTorrent, Firefox opens. If I leave Firefox open and then launch µTorrent, Firefox won't load any sites. This started happening yesterday for no reason, I didn't change anything. It worked before without any problem.

[Broni]

Does same thing happen with IE?
Have you played recently with DNS, ports settings?
Firefox stops working, when you downloading something with µTorrent, or just when you open it?
Try Safe Mode.

[Soviet_Genius]

IE opens, but does not load anything. I also noticed that other programs can't access the internet, like MSN, or my antivirus program's updates. I haven't changed any internet-related settings. For this to happen, µTorrent has to be open. About safe mode, do you mean booting Windows into safe mode or running some program in safe mode?

[WillyW]

...I haven't changed any internet-related settings. For this to happen, µTorrent has to be open.   ...

But have you changed any of the settings within utorrent?
I wondering if it is using all the available bandwidth.

There are settings within utorrent's config for maximun number of connections, max up speed, and max down speed, among others.
Have you changed any of these recently?

If nothing else,  try slowing the max speeds of utorrent, and lowering the max number of connections.    Try a drastic experiment first.... cut them all way down.    Then try your other internet apps.   See if that makes a difference.   If it does,  then start raising the items you lowered,  until you hit a happy medium.

[Broni]

About safe mode, do you mean booting Windows into safe mode or running some program in safe mode?

Yes.

[Soviet_Genius]

I haven't changed any settings. I doubt µTorrent is using all availible bandwidth, I am downloading one torrent which goes really slow, like 5-30 kbps. My connection is way better than that, I can get speeds up to 600 kbps, depending on the server.