Same symptoms of non-working WiFi on my used-to-be-working-just-fine-with-10.7.3 2008 Aluminum Mac, with FileVault on.
I restarted under guest, WiFi was working.
I shut down the Mac, booting back up as myself... and WiFi was back.
The hick-up seems to be happening around
May 10 20:59:29 XXXXXXX-MacBook kernel[0]: Vendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not valid 0 [Time 1336676369] [Message
May 10 20:59:29 XXXXXXX-MacBook kernel[0]: Vendor ID 0xffff is not valid
May 10 20:59:39 XXXXXXX-MacBook kernel[0]: Vendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validVendor ID 0xffff is not validhibernate_page_list_setall start 0xffffff8064ba7000, 0xffffff8064bc6000
May 10 21:04:33 XXXXXXX-MacBook kernel[0]: HID tickle 71 ms
May 10 21:04:33 XXXXXXX-MacBook kernel[0]: Previous Sleep Cause: 5
May 10 21:04:33 XXXXXXX-MacBook kernel[0]: WLAN adapter PCIE config space was not restored (stateNumber = 0)
May 10 21:04:33 XXXXXXX-MacBook kernel[0]: WLAN adapter PCIE config space was not restored (stateNumber = 2)
May 10 21:04:33 XXXXXXX-MacBook kernel[0]: wl_recover_nocard: Timer already started
May 10 21:04:33 XXXXXXX-MacBook kernel[0]: 00000000 00000020 NVEthernet::setLinkStatus - not Active