Software 4.80g
I've used many J-links over the years but recently purchased and am using an Ultra+ now. I connect it to a Windows 7 x64 PC through a 7 port hub. What I am finding is that after the computer sleeps and then wakes up, communication with the J-Link is lost. To re-establish communication I need to unplug the USB cable from the J-Link and plug it back in. I don't recall this happening with the other models previously. Is this in fact something specific to the Ultra+ or have I overlooked something ?

I changed all the USB hub settings ( Windows device manager ) to not allow the computer to put the device to sleep. But this was not sufficient to fix the problem. I also tried connecting the J-Link directly to a port on the PC, and through a hub. In cases, the USB link is somehow broken when the computer sleeps. If I try to start the IAR debugger, which is set to use the J-Link, the IAR app simply hangs. I assume that this is due to some behavior in the Segger DLL. If at that point I unplug the USB connector from the J-Link, then a dialog box pops up with a message about not being able to contact the J-Link.
In my experience, this never happened with an earlier J-Link - only since getting the Ultra+. Is anyone using an Ultra+ that doesn't experience this ?