USB drive automounts, then disconnects and have to restart

[strats]

I'm connecting my external usb drive to the Fedora box and I can see the drive in the 'Places' menu.
However, after a few minutes, the drive is automatically disconnected and it will not reconnect unless I restart.
I have tried unplugging and plugging back in and even cycling power on the drive.
I've searched this forum and google for 'unable to enumerate USB device' and no luck.

Here is the log from Amahi during the issue:

Sep 29 20:05:04 strats dhcpd: DHCPACK on 192.168.1.130 to 60:33:4b:f2:b2:12 (Strats-iPhone) via eth0
Sep 29 20:05:04 strats dhcpd: DHCPREQUEST for 192.168.1.130 from 60:33:4b:f2:b2:12 (Strats-iPhone) via eth0
Sep 29 20:04:19 strats dhcpd: DHCPACK to 192.168.1.144 (00:1868:80:1e) via eth0
Sep 29 20:04:19 strats dhcpd: DHCPINFORM from 192.168.1.144 via eth0 Sep 29 19:59:45 strats nmbd[1815]: Unable to sync browse lists in this workgroup.
Sep 29 19:59:45 strats nmbd[1815]: Unable to find the Domain Master Browser name WORKGROUP<1b> for the workgroup WORKGROUP.
Sep 29 19:59:45 strats nmbd[1815]: find_domain_master_name_query_fail:
Sep 29 19:59:45 strats nmbd[1815]: [2010/09/29 19:59:45, 0] nmbd/nmbd_browsesync.c:350(find_domain_master_name_query_fail)
Sep 29 19:58:08 strats ntpd[1423]: synchronized to 173.230.158.62, stratum 2
Sep 29 19:56:29 strats kernel: hub 2-0:1.0: unable to enumerate USB device on port 3
Sep 29 19:56:29 strats kernel: usb 2-3: device not accepting address 7, error -62
Sep 29 19:56:29 strats kernel: usb 2-3: new full speed USB device using ohci_hcd and address 7
Sep 29 19:56:28 strats kernel: usb 2-3: device not accepting address 6, error -62
Sep 29 19:56:28 strats kernel: usb 2-3: new full speed USB device using ohci_hcd and address 6
Sep 29 19:56:28 strats kernel: usb 2-3: device descriptor read/64, error -62
Sep 29 19:56:27 strats kernel: usb 2-3: device descriptor read/64, error -62
Sep 29 19:56:27 strats kernel: usb 2-3: new full speed USB device using ohci_hcd and address 5
Sep 29 19:56:27 strats kernel: usb 2-3: device descriptor read/64, error -62
Sep 29 19:56:27 strats kernel: usb 2-3: device descriptor read/64, error -62
Sep 29 19:56:27 strats kernel: usb 2-3: new full speed USB device using ohci_hcd and address 4
Sep 29 19:56:26 strats kernel: usb 2-3: USB disconnect, address 3
Sep 29 19:56:26 strats kernel: sd 4:0:0:0: rejecting I/O to offline device
Sep 29 19:56:26 strats kernel: Buffer I/O error on device sde, logical block 244190614
Sep 29 19:56:26 strats kernel: Buffer I/O error on device sde, logical block 244190613
Sep 29 19:56:26 strats kernel: __ratelimit: 20 callbacks suppressed
Sep 29 19:56:26 strats kernel: end_request: I/O error, dev sde, sector 1953524904
Sep 29 19:56:26 strats kernel: sd 4:0:0:0: [sde] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
Sep 29 19:56:26 strats kernel: sd 4:0:0:0: [sde] Unhandled error code
Sep 29 19:56:26 strats kernel: sd 4:0:0:0: Device offlined - not ready after error recovery
Sep 29 19:56:26 strats kernel: usb 2-3: device not accepting address 3, error -62
Sep 29 19:56:26 strats kernel: usb 2-3: reset full speed USB device using ohci_hcd and address 3
Sep 29 19:56:26 strats kernel: usb 2-3: device not accepting address 3, error -62
Sep 29 19:56:26 strats kernel: usb 2-3: reset full speed USB device using ohci_hcd and address 3
Sep 29 19:56:25 strats kernel: usb 2-3: device descriptor read/64, error -62
Sep 29 19:56:25 strats kernel: usb 2-3: device descriptor read/64, error -62
Sep 29 19:56:25 strats kernel: usb 2-3: reset full speed USB device using ohci_hcd and address 3
Sep 29 19:56:25 strats kernel: usb 2-3: device descriptor read/64, error -62
Sep 29 19:56:24 strats kernel: usb 2-3: device descriptor read/64, error -62
Sep 29 19:56:24 strats kernel: usb 2-3: reset full speed USB device using ohci_hcd and address 3
Sep 29 19:55:47 strats kernel: usb 2-3: reset full speed USB device using ohci_hcd and address 3
Sep 29 19:55:37 strats kernel: usb 2-3: reset full speed USB device using ohci_hcd and address 3
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 10
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 9
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 8
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 7
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 6
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 5
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 4
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 3
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 2
Sep 29 19:55:06 strats kernel: Buffer I/O error on device sde, logical block 1
Sep 29 19:55:06 strats kernel: end_request: I/O error, dev sde, sector 8
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Add. Sense: No additional sense information
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Sense Key : Hardware Error [current]
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Unhandled sense code
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Attached SCSI disk
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Assuming drive cache: write through
Sep 29 19:55:06 strats kernel: sde: sde1
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Assuming drive cache: write through
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Assuming drive cache: write through
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Write Protect is off
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: Attached scsi generic sg5 type 0
Sep 29 19:55:06 strats kernel: scsi 4:0:0:0: Direct-Access WDC WD10 EADS-00L5B1 1A01 PQ: 0 ANSI: 2 CCS
Sep 29 19:54:49 strats kernel: USB Mass Storage support registered.
Sep 29 19:54:49 strats kernel: usbcore: registered new interface driver usb-storage
Sep 29 19:54:49 strats kernel: scsi4 : SCSI emulation for USB Mass Storage devices
Sep 29 19:54:49 strats kernel: Initializing USB Mass Storage driver...
Sep 29 19:54:49 strats kernel: usb 2-3: configuration #1 chosen from 1 choice
Sep 29 19:54:49 strats kernel: usb 2-3: SerialNumber: 200811081B50
Sep 29 19:54:49 strats kernel: usb 2-3: Manufacturer: DMI
Sep 29 19:54:49 strats kernel: usb 2-3: Product: DMI USB2.0 Storage
Sep 29 19:54:49 strats kernel: usb 2-3: New USB device strings: Mfr=10, Product=11, SerialNumber=3
Sep 29 19:54:49 strats kernel: usb 2-3: New USB device found, idVendor=0c0b, idProduct=b157
Sep 29 19:54:49 strats kernel: usb 2-3: not running at top speed; connect to a high speed hub
Sep 29 19:54:48 strats kernel: usb 2-3: new full speed USB device using ohci_hcd and address 3
Sep 29 19:54:48 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:48 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 38
Sep 29 19:54:48 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:48 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 37
Sep 29 19:54:47 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:47 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 36
Sep 29 19:54:47 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:47 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 35
Sep 29 19:54:47 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:47 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 34
Sep 29 19:54:46 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:46 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 33
Sep 29 19:54:46 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:46 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 32
Sep 29 19:54:46 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:46 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 31
Sep 29 19:54:46 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:45 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 30
Sep 29 19:54:45 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:45 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 29
Sep 29 19:54:45 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5
Sep 29 19:54:45 strats kernel: usb 1-5: new high speed USB device using ehci_hcd and address 28
Sep 29 19:54:45 strats kernel: hub 1-0:1.0: unable to enumerate USB device on port 5

[cpg]

this info:

Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Sense Key : Hardware Error [current]
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
Sep 29 19:55:06 strats kernel: sd 4:0:0:0: [sde] Unhandled sense code

along with some of the other entries, clearly points at hardware badness.

i had a failing drive and it did that.

some times, you may be able to freeze a drive and get the info from it briefly (search the net for that - has to be one with care).