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Descobri que o Wubi...

Ah, era o Wubi, é??? Hmmmmmmm...

Estou com o mesmo problema que voce.
Instalei o ububu 10.04 de 64 bits.
Acha as redes wireless e tudo mais so que no meu caso ta conectando.
So que demora muito.
Aparece a tela de senha pelo menos umas 5 vezes antes de conectar.
Vai tentando ai que as vezes conecta.
So que do jeito que ta não da pra ficar não...essa demora pra conectar tira a gente do sério.

Ainda estou procurando a solução.
Resolveu o seu problema ai ja ?

mars@ubuntu:~$ sudo lshw -C network
[sudo] password for mars:
  *-network              
       description: Ethernet interface
       product: 88E8040 PCI-E Fast Ethernet Controller
       vendor: Marvell Technology Group Ltd.
       physical id: 0
       bus info: pci@0000:09:00.0
       logical name: eth0
       version: 12
       serial: XX:XX:XX:XX:XX
       capacity: 100MB/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.25 firmware=N/A latency=0 link=no multicast=yes port=twisted pair
       resources: irq:28 memory:fe8fc000-fe8fffff ioport:de00(size=256)
  *-network
       description: Network controller
       product: BCM4312 802.11b/g
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:0b:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=b43-pci-bridge latency=0
       resources: irq:17 memory:fe7fc000-fe7fffff
  *-network
       description: Wireless interface
       physical id: 2
       logical name: wlan0
       serial: XX:XX:XX:XX:XX:XX
       capabilities: ethernet physical wireless
       configuration: broadcast=yes multicast=yes wireless=IEEE 802.11bg

mars@ubuntu:~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bg  ESSID:"g\xC6isQ\xFFJ\xEC)\xCD\xBA\xAB\xF2\xFB\xE3F|\xC2T\xF8\x1B\xE8\xE7\x8DvZ.c3\x9F\xC9\x9A"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: Not-Associated  
          Tx-Power=20 dBm  
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          
pan0      no wireless extensions.

Instalei o ubuntu 9.04 32 bits no meu Inspiron 1525 e tive o mesmo problema, depois de uma rápida pesquisa encontrei uma solução relativamente simples. O problema não está no driver e sim no arquivo de BlackList:

No meu caso o arquivo abaixo já estava criado.
   

Citar

vim ~/.config/compiz/compiz-manager

E adicionei a seguinte linha no início do arquivo

Citar

SKIP_CHECKS=yes

Feito.
Não precisa nem reiniciar o X, somente fui em System -> Preference -> Aparence e habilitei os efeitos visuais.
Isso ocorreu porque o Compiz adicionou este modelo de placa de vídeo em sua Blacklist.

# Use Xft?
use_xft yes
xftfont Arial:size=8:bold
xftalpha 1
text_buffer_size 2048

# set to yes if you want Conky to be forked in the background
#background yes

# Update interval in seconds
update_interval 1

# This is the number of times Conky will update before quitting.
# Set to zero to run forever.
total_run_times 0

# Create own window instead of using desktop (required in nautilus)
own_window yes
own_window_transparent yes
own_window_type override
#own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager

# Use double buffering (reduces flicker, may not work for everyone)
double_buffer yes

# Minimum size of text area
minimum_size 220 0
maximum_width 220

# Draw shades?
draw_shades yes

# Draw outlines?
draw_outline no

# Draw borders around text
draw_borders no

# Draw borders around graphs
draw_graph_borders no

# Stippled borders?
stippled_borders 0

# border margins
border_margin 5

# border width
border_width 1

# Default colors and also border colors
default_color FFFFFF
default_shade_color 1a3f1f
color1 ff7700

#default_outline_color black
#own_window_colour 000000

# Text alignment, other possible values are commented
#alignment top_left
alignment top_right
#alignment bottom_left
#alignment bottom_right

# Gap between borders of screen and text
# same thing as passing -x at command line
# x é a distância lateral e y é a vertical
gap_x 20
gap_y 50

# Subtract file system buffers from used memory?
no_buffers yes

# set to yes if you want all text to be in uppercase
uppercase no

# number of cpu samples to average
# set to 1 to disable averaging
cpu_avg_samples 2

# number of net samples to average
# set to 1 to disable averaging
net_avg_samples 2

# Force UTF8? note that UTF8 support required XFT
override_utf8_locale yes

# Add spaces to keep things from moving about?  This only affects certain objects.
use_spacer none

TEXT

${alignc} Dell Inspiron 1525
Sistema ${hr 1}
ubuntu 9.04 ${alignr} Jaunty Jackalope
Kernel ${alignr} ${kernel}
Tempo ligado ${alignr} ${uptime}

${hr 1}
CPU1 ${freq_dyn_g 1} GHz ${alignr} ${cpu cpu1}% ${cpubar cpu1 3,75}
CPU2 ${freq_dyn_g 2} GHz ${alignr} ${cpu cpu2}% ${cpubar cpu2 3,75}
RAM ${alignr} ${memperc}% ${membar 3,75}
SWAP ${alignr} ${swapperc}% ${swapbar 3,75}
BATERIA ${alignr} ${battery_percent BAT0}% ${battery_bar 3,75 BAT0}
${hr 1}

Monitor de processos ${hr 1}
${processes} processos  ${alignr} ${running_processes} rodando
Processo ${alignr} PID    CPU  MEM
${top name 1} ${alignr} ${top pid 1} ${top cpu 1} ${top mem 1}
${top name 2} ${alignr} ${top pid 2} ${top cpu 2} ${top mem 2}
${top name 3} ${alignr} ${top pid 3} ${top cpu 3} ${top mem 3}
${top name 4} ${alignr} ${top pid 4} ${top cpu 4} ${top mem 4}
${top name 5} ${alignr} ${top pid 5} ${top cpu 5} ${top mem 5}

Temperatura ${hr 1}
MoBo ${alignr}${acpitemp}°C
CPU1 ${alignr}${execi 300 sensors | grep Core\ 0 | cut -c15-16 ;}°C
CPU2 ${alignr}${execi 300 sensors | grep Core\ 1 | cut -c15-16 ;}°C
HD ${alignr}${execi 300 nc localhost 7634 | cut -c33-34 ;}°C

Rede ${hr 1}
IP local ${alignr}${addr ppp0}
Up ${upspeed ppp0} kb/s ${alignr} ${upspeedgraph ppp0 10,75 ff7700 ff7700}
Down ${downspeed ppp0} kb/s ${alignr} ${downspeedgraph ppp0 10,75 ff7700 ff7700}
Upload ${alignr} ${totalup ppp0}
Download ${alignr} ${totaldown ppp0}

E-mail ${hr 1}
${execi 100 sh /home/fulano/.scripts/gmail.sh}