Comment 6 for bug 734883

Same here, using Ubuntu 11.04.

A bit more extensive output from dmesg:

[255442.160171] usb 2-2: new high speed USB device using ehci_hcd and address 12
[255442.295590] scsi7 : usb-storage 2-2:1.0
[255443.295050] scsi 7:0:0:0: Direct-Access Apple iPod 1.62 PQ: 0 ANSI: 0
[255443.296722] sd 7:0:0:0: Attached scsi generic sg2 type 0
[255443.299353] sd 7:0:0:0: [sdb] 1982464 2048-byte logical blocks: (4.06 GB/3.78 GiB)
[255443.300683] sd 7:0:0:0: [sdb] Write Protect is off
[255443.300691] sd 7:0:0:0: [sdb] Mode Sense: 68 00 00 08
[255443.305010] sd 7:0:0:0: [sdb] No Caching mode page present
[255443.305017] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[255443.308116] sd 7:0:0:0: [sdb] 1982464 2048-byte logical blocks: (4.06 GB/3.78 GiB)
[255443.311021] sd 7:0:0:0: [sdb] No Caching mode page present
[255443.311027] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[255443.385990] sdb: [mac] sdb1 sdb2 sdb3
[255443.388395] sd 7:0:0:0: [sdb] 1982464 2048-byte logical blocks: (4.06 GB/3.78 GiB)
[255443.391150] sd 7:0:0:0: [sdb] No Caching mode page present
[255443.391156] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[255443.391161] sd 7:0:0:0: [sdb] Attached SCSI removable disk
[255444.264133] sd 7:0:0:0: [sdb] Bad block number requested
[255444.264166] hfs: unable to find HFS+ superblock
[255444.544247] sd 7:0:0:0: [sdb] Bad block number requested
[255444.544272] hfs: unable to find HFS+ superblock

I get the same GUI error message as the original reporter.