Low WiFi rates (Hardy 64Bit, Intel Pro Wireless 3945)

[Phil Bieber]

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Hi List!
Since I switched to Hardy, I had quite low WiFi rates, but it didn't
bother me as I was able to surf and load with ~70 - 100 Kbit/s. But
now it dropped down to 700KBit/s, so it cant be the surrounding setup.
In the Ubuntu Forums I saw someone fixing this by issuing "iwconfig
wlan0 rate 54M", but that didn't help me. According to WICD (WiFi
Manager alternative to the network manager), the signal strength is
good, and that is confirmed by Windows. Also the problem stays when
manually connecting via System->Administration->Network. With gutsy
everything was OK and I could surf fast as well!
The card is an Intel Pro Wireless 3945ABG inside a DELL Inspiron 640m.
Here is the output from iwconfig:

iwconfig
wlan0     IEEE 802.11g  ESSID:"bieberdamm_og"  Nickname:""
          Mode:Managed  Frequency:2.437 GHz  Access Point: 00:0F:B5:0F:3B:33
          Bit Rate=54 Mb/s   Tx-Power=27 dBm
          Retry min limit:7   RTS thr:off   Fragment thr=2346 B
          Encryption
key:22C3-F03B-A0C0-9C81-DCBC-E93B-B8BC-7918-544D-8474-DDFC-3527-278A-F695-C643-95D8
[3]
          Power Management:off
          Link Quality=82/100  Signal level=-43 dBm  Noise level=-67 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Has anybody a good tip for me? I just want to surf again!
I've also checked google, but so far without success...

Thanks a lot for reading & tips!

Cheers
Phil Bieber
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Phil Bieber - philbieber at gmail.com

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