Hi Michele, I know it's been over a year since your post, but I was wondering if you ever found a solution to your problem. I've been battling the same thing ever since I got my SB in October, and it's' been driving me crazy. Yesterday, I think I figured out a solution. I suspected that it had to do with too much data being sent to the machine at once, and I was looking for a way to slow it down. I tried a lot of different things, but what finally seems to have done the trick was to switch out the USB cable I was using from a high speed 2.0 cable to an old 1.1, the theory being that 1.x cables have slower data transfer rates. And guess what? It worked! My machine used to do the machine gun thing at around 9 minutes into the cutting, but yesterday it successfully cut my whole file (over an hour) without doing it.
I suspect that some who have never run into this problem are either 1) not cutting huge data-heavy files; 2) they're using an old 1.1 cable already; 3) their computer USB port is an older 1.1, which would slow the data transfer speed, even if using a 2.0 cable or 4) their USB cable is connected to a USB 1.1 hub, which I think would also slow the transfer of data.
So to try this out on your own, remove the blade and media from your machine, and then see if you can find either an old 1.0 or 1.1 USB cable around your house (or ask a friend who never throws anything away!) To tell whether a cable is 1.x or 2.0, it may be marked along the length of the cable (either 1.0, 1.1 or 2.0). Also, most 2.0 cables have a "+" on the USB logo (see picture here):
http://ww3.microtek.com.tw/tw/uploads/f ... cable3.pdfIf you can't find an old 1.x USB cable, it might work if you have a USB 1.1 hub. Just run the 2.0 cable from your computer to the USB hub, and then another cable from the hub to the SB. As long as the hub is 1.1, I believe it will slow the transfer of data, even with 2.0 cables, though I'm not positive.
That said, this solution worked for ME, but I'm really curious if it will work for others. If anyone tries it out, please let us know if it worked for you.