ehci_hcd-s MP3 lejatszo szivas

Szoval: Cowon U3, sima USB Mass Storage. Desktop gep UHCI-s 1.1-es USB-jen vigan futkoraszik mar talan 1 eve.
Nemregiben vettem a laptopom amibe mar van mindenfele foldi jo, koztuk USB2.0, azaz ehci_hcd (Intel ICH8).

Ezzel a kovetkezot csinalja: bedugom, felmountolom eddig jo.
Ha elkezdek masolni akkor egy ideig teszi azt szelsebesen (mondjuk 2-3 albumot, ami cirka 20-25 file es mondjuk ~200M) majd utana belassul es megall.

Log:
scsi 12:0:0:0: Direct-Access COWON iAUDIO U3 0100 PQ: 0 ANSI: 0
sd 12:0:0:0: [sdb] 3911680 512-byte hardware sectors (2003 MB)
...
sd 12:0:0:0: [sdb] Assuming drive cache: write through
sdb:
sd 12:0:0:0: [sdb] Attached SCSI removable disk

Tehat eddig okes majd jon egy (illetve 10-12) ilyen:
usb 2-5: reset high speed USB device using ehci_hcd and address 21

Es ezutan a finomak:sd 12:0:0:0: [sdb] Result: hostbyte=0x07 driverbyte=0x00
end_request: I/O error, dev sdb, sector 639
usb 2-5: reset high speed USB device using ehci_hcd and address 21
usb 2-5: reset high speed USB device using ehci_hcd and address 21
usb 2-5: can't restore configuration #1 (error=-71)
usb 2-5: USB disconnect, address 21
sd 12:0:0:0: [sdb] Result: hostbyte=0x07 driverbyte=0x00
end_request: I/O error, dev sdb, sector 879
sd 12:0:0:0: [sdb] Result: hostbyte=0x07 driverbyte=0x00
end_request: I/O error, dev sdb, sector 1119
sd 12:0:0:0: [sdb] Result: hostbyte=0x01 driverbyte=0x00
end_request: I/O error, dev sdb, sector 1359
printk: 949 messages suppressed.
Buffer I/O error on device sdb, logical block 1
lost page write due to I/O error on sdb

Utolso ket sor sztem a vegtelensegig folytatodna.

Otlet?

Probaltam mar BIOSban ki-bekapcsolni a "Legacy USB Support"-ot, CONFIG_USB_SUSPEND-et, probaltam low level USB block-al is, de sehogyse jo.
Mindekozben a masik gepen barmikor jo (igaz neha ezen szetcseszi a filerendszert, mivel nemlehet rendesen umountolni, azaz kapott mar 1-2 mkfs.vfat-ot, de utana mindig jo).

Edit1: Ilyet is kiir neha:
sd 13:0:0:0: rejecting I/O to offline device
FAT: FAT read failed (blocknr 59)