WLAN Problem

/sbin/lspci -nnk | grep -iA3 net

/sbin/lspci -nnk 
00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GSE Express Memory Controller Hub [8086:27ac] (rev 03) 
	Subsystem: Lenovo Device [17aa:386f] 
	Kernel driver in use: agpgart-intel 
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GSE Express Integrated Graphics Controller [8086:27ae] (rev 03) 
	Subsystem: Lenovo Device [17aa:3870] 
	Kernel driver in use: i915 
	Kernel modules: i915 
00:02.1 Display controller [0380]: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller [8086:27a6] (rev 03) 
	Subsystem: Lenovo Device [17aa:3870] 
00:1b.0 Audio device [0403]: Intel Corporation NM10/ICH7 Family High Definition Audio Controller [8086:27d8] (rev 02) 
	Subsystem: Lenovo Lenovo 3000 C200 audio [Realtek ALC861VD] [17aa:3802] 
	Kernel driver in use: snd_hda_intel 
	Kernel modules: snd_hda_intel 
00:1c.0 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 1 [8086:27d0] (rev 02) 
	Kernel driver in use: pcieport 
	Kernel modules: shpchp 
00:1c.1 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 2 [8086:27d2] (rev 02) 
	Kernel driver in use: pcieport 
	Kernel modules: shpchp 
00:1c.2 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 3 [8086:27d4] (rev 02) 
	Kernel driver in use: pcieport 
	Kernel modules: shpchp 
00:1c.3 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 4 [8086:27d6] (rev 02) 
	Kernel driver in use: pcieport 
	Kernel modules: shpchp 
00:1d.0 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 [8086:27c8] (rev 02) 
	Subsystem: Lenovo Device [17aa:3807] 
	Kernel driver in use: uhci_hcd 
	Kernel modules: uhci_hcd 
00:1d.1 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 [8086:27c9] (rev 02) 
	Subsystem: Lenovo Device [17aa:3808] 
	Kernel driver in use: uhci_hcd 
	Kernel modules: uhci_hcd 
00:1d.2 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 [8086:27ca] (rev 02) 
	Subsystem: Lenovo Device [17aa:3809] 
	Kernel driver in use: uhci_hcd 
	Kernel modules: uhci_hcd 
00:1d.3 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 [8086:27cb] (rev 02) 
	Subsystem: Lenovo Device [17aa:380a] 
	Kernel driver in use: uhci_hcd 
	Kernel modules: uhci_hcd 
00:1d.7 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller [8086:27cc] (rev 02) 
	Subsystem: Lenovo Device [17aa:380b] 
	Kernel driver in use: ehci-pci 
	Kernel modules: ehci_pci 
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev e2) 
00:1f.0 ISA bridge [0601]: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge [8086:27b9] (rev 02) 
	Subsystem: Lenovo Device [17aa:380d] 
	Kernel driver in use: lpc_ich 
	Kernel modules: intel_rng, lpc_ich, leds_ss4200 
00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] (rev 02) 
	Subsystem: Lenovo Device [17aa:3810] 
	Kernel driver in use: ata_piix 
	Kernel modules: ata_piix, pata_acpi, ata_generic 
00:1f.2 SATA controller [0106]: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [AHCI mode] [8086:27c5] (rev 02) 
	Subsystem: Lenovo Device [17aa:3835] 
	Kernel driver in use: ahci 
	Kernel modules: ahci 
00:1f.3 SMBus [0c05]: Intel Corporation NM10/ICH7 Family SMBus Controller [8086:27da] (rev 02) 
	Subsystem: Lenovo Device [17aa:380f] 
	Kernel driver in use: i801_smbus 
	Kernel modules: i2c_i801 
02:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01) 
	Subsystem: Broadcom Corporation Device [14e4:04b5] 
	Kernel driver in use: b43-pci-bridge 
	Kernel modules: ssb 
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02) 
	Subsystem: Lenovo Device [17aa:389e] 
	Kernel driver in use: r8169 
	Kernel modules: r8169