I am dual-booting my laptop going between Windows 7 and Ubuntu 12.04 LTS. Initially, I can connect to WiFi, but if I get disconnected for some reason, or if I restart my router, Ubuntu won't reconnect unless I reboot my laptop. Just logging out and back in won't work, I have to restart ubuntu, why and how can I fix this?

The output of sudo lshw -c network is

 *-network               

       description: Wireless interface

       product: BCM4313 802.11b/g/n Wireless LAN Controller

       vendor: Broadcom Corporation

       physical id: 0

       bus info: pci@0000:04:00.0

       logical name: eth1

       version: 01

       serial: e4:d5:3d:77:df:9d

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

       configuration: broadcast=yes driver=wl0 driverversion=6.20.155.1 (r326264) ip=192.168.1.105 latency=0

multicast=yes wireless=IEEE 802.11abg

       resources: irq:16 memory:c2500000-c2503fff   *-network

       description: Ethernet interface

       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller

       vendor: Realtek Semiconductor Co., Ltd.

       physical id: 0

       bus info: pci@0000:05:00.0

       logical name: eth0

       version: 05

       serial: ec:9a:74:48:ce:63

       size: 10Mbit/s

       capacity: 100Mbit/s

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation

       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8105e-1.fw

latency=0 link=no multicast=yes port=MII speed=10Mbit/s

       resources: irq:44 ioport:3000(size=256) memory:c0404000-c0404fff memory:c0400000-c0403fff

I have installed Broadcom STA wireless driver. I have experienced the same issue before with other distros; Crunchbang doesn't connect to wireless at all, Archbang won't connect to wireless after upgrading pacman. The problem began with Ubuntu, which is why I tried both Crunchbang and Arch and then ended back at Ubuntu.

The output of:

lsmod

cat /etc/modules

cat /etc/modprobe.d/blacklist.conf