Bug#681232: "ath5k phy0: gain calibration timeout" with linux-image-3.2.0-3-amd64

["Sergey A. Lipnevich" <sergey@optimaltec.com>]

I have the same exact symptoms, also started with 
linux-image-3.2.0-3-amd64 but worked great with many prior 3.2 versions 
including linux-image-3.2.0-2-amd64.

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07:00.0 Ethernet controller: Atheros Communications Inc. AR242x / AR542x 
Wireless Network Adapter (PCI-Express) (rev 01)
    Subsystem: AMBIT Microsystem Corp. Device 0422
    Flags: bus master, fast devsel, latency 0, IRQ 19
    Memory at b0200000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: [40] Power Management version 2
    Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
    Capabilities: [60] Express Legacy Endpoint, MSI 00
    Capabilities: [90] MSI-X: Enable- Count=1 Masked-
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Virtual Channel
    Kernel driver in use: ath5k