Aireplay-ng Does not get any ARP requests?

[zijin_cheng]

I'm having a problem with airplay-ng. These are the steps listed below.

Downloaded a WPA_supplicant conf file. I edited the ESSID to ZIJIN.
sudo WPA_SUPPLICANT -c/root/wpa_supplicant.conf -Dwext -iwlan0 -dd
I get this:
STATE:ASSOCIATED ->COMPLETED
RTA_NEWLINK, IFLA_FRAME: INTERFACE WLAN0 ADDED

I then open a new konsole tab:

airmon-ng stop wlan0
ifconfig wlan0 down
macchanger --mac 00:11:22:33:44:55 wlan0
airmon-ng start wlan0

I already know my own router mac address, so i jump to:

airodump-ng -c 11 -w data --bssid 00:22:44:11:22:66 wlan0

Here's my problem:

aireplay-ng -1 0 -a 00:22:44:11:22:66 -h 00:11:22:33:44:55 -e ZIJIN wlan0

I get:

Waiting for beacon frame: BSSID ..... on channel 11

Sending authentication request (Open System) ACK (5 times)
Authentication Successful
Sending Association request

Sending authentication request (Open System) (Once)
Got a deauthentication packet: (Waiting 3 seconds)

Sending authentication request (Open System) (20 or so times)

Sending authentication request (Open System)
Attack was unsuccessful

I then test injection:
aireplay-ng -9 wlan0

I get:
Injection working!
Found 3 APs

Judy
Power -85
16/30 53%

ZIJIN (I'm in the same room)
Power -25
18/30 60%

Bushmills
Power -67.50
12/30 40%

So I try aireplay-ng anyways:
aireplay-ng -3 -b 00:22:44:11:22:33 -h 00:11:22:33:44:55 wlan0

I get:
For information, no action required, using gettimeofday() instead of dev/rtc
Waiting for beacon frame (BSSID) on channel 11
Saving ARP requests to sdafasdf.cap
Read 132334 packets (Got 0 ARP requests and 0 ACKS) sent 0 packets

I then try aircrack-ng:
aircrack-ng data-03.cap

I get tested 151849 keys (have 39 ivs)
Failed: Next try with 5000 ivs

Injection doesn't work, I'm using backtrack 4 beta, Intel 5100 and drivers iwlagn

[imported_-$p!c3-]

Greetings to you, zijin_cheng!
It seems that you've put some effort into your post in order to get some real help here. Would you please tell me which wifi hardware you use?
And with all respect to Backtrack... do you JUST use the LiveCD or do you have other Operating Systems installed as well?

Tell us something about you, boy...

[zijin_cheng]

I have an Intel Wifi link 5100 and I have windows vista 64 bit installed in my whole 320gb hd (nfts i think) and i am booting backtrack 4 beta from a usb stick without persistent changes. the only os i have installed on hd is vista.