Luckily, I have another mini-USB-cable with a stem on it that is a mm or two longer than the supplied one,
and that one seems to fit acceptably.
But, you're right: the mini-USB connector on the plug is recessed enough that not just any cable will
work reliably with it.
Got the same problem with the USB-Port. The USB doesnt seem to "snap-in" like on USB-Port on other devices.
All my USB-cables doesnt click-snap-in like on my mobile-phone ror card reader.
But one of my cables fits a bit better, so that I can use the serial port.
From my point of view the usb is a bit to much recessed into the case.
The connector itself seems to be completly fine soldered to the pcb.