I bought this for trecking in Nepal. Worked very well for 5 days then (like Thomas King - 12/10/09) the USB socket, which is soldered directly to the panel, detached. In my case was when unplugging the cable. Was a rather tight fit and fearing it might be a liable to damage I had previously held it carefully, but did not on that occasion.
Thought I could easily solder it, but didn't work, presumably due to damage to the circuit near to where it came off. The panel does still work, as evidenced by voltage from a pair of flat outputs on the panel, to which I will try soldering the relevant wires of a separate USB lead.
Would strongly recommend more securely fixing the socket to the board with some araldite and the use of a short USB extension lead to further reduce the strain on the fixed socket.