Yea I have 2. I opened one and cleaned all the paste very preciclsy and with proper tools.
It seems to have fixed the problem. But now the other one also runs fine.
So its wierd. Still trying to work out.
Some people say to use a powered USB since the U3 might use a bit more and cause reset on the USB port and force a "crash" on the driver.
Using powered usb hub is not a bad idea. Just find the one that using MTT chip.
Having similar issues. What do you mean with the last statement? MTT chip? i bought an icybox IB-ac611, didnt really solve anything.
Lots of people having issues with the U3 stability and performance by the way