This is the relevant bit for your wireless
If you don't get any answers here, you might like to search the forums with
description: Wireless interface
product: BCM4313 802.11b/g/n Wireless LAN Controller
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:12:00.0
logical name: eth1
width: 64 bits
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=188.8.131.52 (r326264) latency=0 multicast=yes wireless=IEEE 802.11abg
resources: irq:17 memory:fbc00000-fbc03fff
as a search criteria. There are lots of threads on it.
I don't know all that much about it, and I'm pressed for time right now, so I don't want to offer any half-baked advice. I might be able to look into the matter a bit later on or tomorrow.