Have you attempted to put the LG in another USB port? What type of computer? PC? Laptop? and waht operating system? Are there service packs installed for the OS? The more information you provide the better the trouble shooting.
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EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.