BCM43225 wireless card has connectivity problems [duplicate]

Question

Possible Duplicate:
How do I get a Broadcom BCM43225 wireless card working?

Yesterday, I installed Ubuntu 12.04 as a dual-boot with Windows 7 64 bit. This is the very first time I've touched a linux system and so any attempt to research my problem on Google returns myriad pages that I don't understand.

My problem is that I immediately had connectivity issues with my wireless. It often drops the connection, and when it is connected, it's pretty slow. The wireless card is a BCM43225.

I tried updating the broadcom sta driver found in the Additional Drivers section, and I found another thread that told me I should download and install: b43-fwcutter and firmware-b43-lpphy-installer I've done that, but it doesn't seem to have helped.

Please help me get this figured out. PLEASE REMEMBER THAT I AM A LINUX/UBUNTU NOOB, so I likely won't understand any jargon or too-specific terms. However, I do understand the basics of running commands and programs from a terminal, at least as far as it's similar to Windows.

From reading on other threads, I think the following terminal output will be asked for, so here it is:

don@ubuntu:~$ rfkill list
0: acer-wireless: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
don@ubuntu:~$ sudo lshw -C network
[sudo] password for don: 
  *-network               
       description: Ethernet interface
       product: NetLink BCM57785 Gigabit Ethernet PCIe
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 10
       serial: b8:70:f4:e5:12:43
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.121 firmware=sb latency=0 link=no multicast=yes port=twisted pair
       resources: irq:16 memory:d1830000-d183ffff memory:d1840000-d184ffff memory:d1850000-d18507ff
  *-network
       description: Wireless interface
       product: BCM43225 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 01
       serial: 68:a3:c4:44:81:96
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=brcmsmac driverversion=3.2.0-23-generic firmware=N/A ip=192.168.0.12 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       resources: irq:17 memory:d1900000-d1903fff
don@ubuntu:~$

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Ok, it turns out this is not fixed. After spending some hours in Windows job-hunting, I switched back to Ubuntu, margarita in hand, ready to play with my new OS. And I encountered laaaaaaaaaaaaag. It's been five minutes and Gmail still hasn't loaded - strangely, this page loaded almost instantaneously. Facebook is doing ok. Speedtest.net won't load more than the banner.

I tried disabling the broadcom sta driver that WAS enabled, but that hasn't helped matters any.

So to summarize up to this point: b43-fwcutter & firmware-b43-lpphy-installer have been installed and removed - they didn't fix the problem. bcmwl-kernel-source is installed, but doesn't appear to have fixed the problem. Additional Drivers lists the Broadband STA driver, which I have tried on and off with the above configurations.

$ sudo just-work-already -dear_god_please

Are there any other things I can try?

@Eliah, thanks for the heads-up. I'd never used a forum like this before, and my brain was already melting from all the other new things I have to learn for Ubuntu.

Update: After waiting a while, and checking my network now and then, it turns out the problem is in fact fixed using the last configuration listed in my question. The last problem I had (and maybe some of the others?) was simply the network genuinely crapping out.