wireless disables (couldn't work)

[kelung]

hii

my laptop is acer aspire 5052 have wireless device atheros 5006EG not working 
in kubuntu gutsy (see the attachment)

anyone can resolve this problem??

regards,
kelung
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[  134.398839] ath_hal: module license 'Proprietary' taints kernel.
[  134.399356] ath_hal: 0.9.18.0 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
[  134.491444] wlan: 0.8.4.2 (0.9.3.2)
[  134.561810] ath_pci: 0.9.4.5 (0.9.3.2)
[  134.561860] PCI: Enabling device 0000:02:00.0 (0000 -> 0002)
[  134.561867] ACPI: PCI Interrupt 0000:02:00.0[A] -> GSI 16 (level, low) -> IRQ 19
[  134.561880] PCI: Setting latency timer of device 0000:02:00.0 to 64
[  134.586194] wifi%d: unable to attach hardware: 'Hardware revision not supported' (HAL status 13)
[  134.586204] ACPI: PCI interrupt for device 0000:02:00.0 disabled