Backtrack5 freezing after connect Wireless

Hello everyone, I have a dual boot (with Win7) install of backtrack 5 r1 GNOME 32bits (kernel 2.6.39.4) on my notebook.
The system is working fine, and i didnt have any problems during the installation, but when I connect to the internet using a wireless connection, in the begin everything looks fine, I can access some websites, but some seconds/minutes later my Backtrack 5 freezes completely and I have to reboot the notebook.
OBS: Using a wired connection, I didnt have any problem

iwconfig

Code:

lo no wireless extensions. eth0 no wireless extensions. wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on mon0 IEEE 802.11bgn Mode:Monitor Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on

ifconfig

Code:

eth0 Link encap:Ethernet HWaddr 00:23:5a:71:30:e0 inet addr:192.168.0.188 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::223:5aff:fe71:30e0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4074 errors:0 dropped:0 overruns:0 frame:0 TX packets:2694 errors:0 dropped:0 overruns:0 carrier:1 collisions:0 txqueuelen:1000 RX bytes:4782354 (4.7 MB) TX bytes:453271 (453.2 KB) Interrupt:41 mon0 Link encap:UNSPEC HWaddr CC-AF-78-7D-F5-2D-00-00-00-00-00-00-00-00-00-00 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:619 errors:0 dropped:630 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:166714 (166.7 KB) TX bytes:0 (0.0 B) wlan0 Link encap:Ethernet HWaddr cc:af:78:7d:f5:2d UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

airmon-ng

Code:

Found 4 processes that could cause trouble. If airodump-ng, aireplay-ng or airtun-ng stops working after a short period of time, you may want to kill (some of) them! PID Name 1303 dhclient3 1360 dhclient3 1853 dhclient 1871 dhclient Process with PID 1360 (dhclient3) is running on interface wlan0 Interface Chipset Driver wlan0 Atheros AR9287 ath9k - [phy0] (monitor mode enabled on mon1) mon0 Atheros AR9287 ath9k - [phy0]

dmesg | tail

Code:

[ 549.824132] eth0: no IPv6 routers present [ 615.975936] ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 619.495119] ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 619.700417] atl1c 0000:06:00.0: irq 41 for MSI/MSI-X [ 619.702897] atl1c 0000:06:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full Duplex> [ 619.852621] atl1c 0000:06:00.0: irq 41 for MSI/MSI-X [ 619.855115] atl1c 0000:06:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full Duplex> [ 621.907704] audit_printk_skb: 24 callbacks suppressed [ 621.907716] type=1400 audit(1318565945.413:20): apparmor="DENIED" operation="open" parent=1846 profile="/sbin/dhclient3" name="/var/lib/wicd/dhclient.conf" pid=1853 comm="dhclient" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 [ 630.736019] eth0: no IPv6 routers present

lspci

Code:

06:00.0 Ethernet controller: Atheros Communications AR8152 v2.0 Fast Ethernet (rev c1) 07:00.0 Network controller: Atheros Communications Inc. AR9287 Wireless Network Adapter (rev 01)

I searched alot about that, and I didnt find anything that could fix my problem until now.
Thanks for the attention. :)

Some additional info:
-When my network cable is connected to notebook, I can connect using wireless and got no problems, but if I remove the cable, my Backtrack freezes again. Could it be some conflict issue with drivers?
-Sometimes I had the error message from wicd: "Could not connect with wicd D-Bus interface", so I tried this to fix the problem:

Code:

dpkg-reconfigure wicd update-rc.d wicd defaults

And my wireless connection worked fine, but after the first time I rebooted my computer, the freezes started again.
-On Windows 7 my wifi card is named Atheros AR9825 and on Backtrack Atheros AR9287. Could it mean something?

Hope someone can help me, cause im getting sick of this problem...
Thanks.