I am using centos5.3 x86_64 on a gigabyte GA-MA78GM-US2H motherboard. When I insert a USB thumbdrive its detected with dmesg, I mount it and start to copy files. Then I start getting errors: sdd: assuming drive cache: write through sdd: sdd1 sdd2 sd 7:0:0:0: Attached scsi removable disk sdd sd 7:0:0:0: Attached scsi generic sg4 type 0 usb-storage: device scan complete usb 1-5: reset high speed USB device using ehci_hcd and address 5 usb 1-5: device descriptor read/64, error -110 usb 1-5: device descriptor read/64, error -110 usb 1-5: reset high speed USB device using ehci_hcd and address 5 usb 1-5: device descriptor read/64, error -110 usb 1-5: device descriptor read/64, error -110 usb 1-5: reset high speed USB device using ehci_hcd and address 5 usb 1-5: device not accepting address 5, error -110 I have also tried connecting a USB hub into my computer and using that. Then plugging the thumbdrive into the hub. I get the same results. I have never had USB issues before - any ideas? Jerry