Ever since I made the permanent switch from Vista to Ubuntu i've had wireless connectivity problems. From watching the network manager when it disconnects it seems like it turns off the receiver for some reason. Could it be bad drivers? I used their install software and the site doesn't really offer driver downloads. The adapter is a Netgear WNA1000 if memory serves, and I don't know much about the router except that it's a Motorola Surfboard. And I figure this might help a bit

*-network               
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
      vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: 01
       serial: 00:1b:b9:a7:39:a4
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm vpd msi pciexpress bus_master cap_list rom 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=N/A latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:40 ioport:d800(size=256) memory:feaff000-feafffff memory:feac0000-feadffff
  *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@2:1.1
       logical name: wlan0
       serial: 00:26:f2:8b:fb:38
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=carl9170 driverversion=3.2.0-24-generic-pae firmware=1.9.4  ip=10.0.0.36 link=yes multicast=yes wireless=IEEE 802.11bgn

I have tried installing WICD and it didn't fix the problem. Any help would be greatly appreciated. This problem is greatly limiting what I can do with my computer.