Wireless drivers stopped working on a laptop with Ubuntu 12.10

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http://askubuntu.com – Everything worked fine on my laptop with fresh Ubuntu 12.10 x64, until wireless just stopped working at some moment. Hardware switch has no effect. sudo lshw -C network: *-network UNCLAIMED description: Network controller product: BCM4313 802.11b/g/n Wireless LAN Controller vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:07:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:c3500000-c3503fff There's also no wlan device in ifconfig, while on Ubuntu li (HowTos)