Broadcom BCM4313 does not connect to one particular wifi net

My Dell laptop didn't have problems connecting to my wifi at home, now it just doesn't connect. I'm not sure, but probably it was after an update. It can see the wifi, it can connect to other wifi's without a problem. It can connect to my home wifi from windows. Other computer can connect to my home wifi. I can connect to my home network by wire. It just doesn't connect by wireless.

I have tried a couple of things, basically change the drivers, but no sucess yet.

I would appreciate any suggestion.

Thanks in advance

Please begin with a complete hardware description, especially of the network card(s).

Hopefully this is enough

*-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: wlan0
version: 01
serial: 1c:65:9d:31:91:f2
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=brcmsmac driverversion=3.2.0-37-generic-pae firmware=N/A ip=192.168.1.24 latency=0 multicast=yes wireless=IEEE 802.11bgn
resources: irq:16 memory:ff600000-ff603fff


04:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)

We'll find out. Now I have changed the title, hoping to attract an answer.

After a couple of weeks (and several fail trys) without doing anything (consciously) it start working again.

thanks anyway