Nikon D3 tethering, keep losing camera connection

Anyone running into this problem? I keep having to turn off the camera to get it connected.
The software is working great and I replaced the USB cord with a USB 2 with the little power booster/capacitor(forget what it's called exactly).
That was recommended by tech guy, but same problem persists in L3.
It happened a couple times with Capture One and Nikon software, but only when I was working those programs hard.
L3 seems to be doing this regardless of how hard I'm working it.
I'm running 4gb OSX Snow Leopard with L3 only on.
Got a huge shoot Monday, so looking for any possible answers/solutions.
Thanks, matty

A Booster is only needed if the signal quality on the cable gets very bad, due to very long cable or a cheap cable. It certainly never will be able to improve anything regarding the speed of the connection.
Another thing is if you have a Hub, which can be powered from the USB port of the PC or have an own power supply. A single USB port always is limited to 500mA. Therefore, if you use a Hub without a power supply the connected clients have to share the 500mA from the PC port. That can lead to problems if one of the clients needs more power than it can get. IMHO, it's never a good idea to use Hub's without power supply which will allow for 500mA on every port of the Hub.
As a best practice, always connect the camera directly to a USB port of the PC with a good quality USB2 cable.

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Nikon D3 tethering, keep losing camera connection

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