[Madwifi-users] very bad link with D-link DWL-AG520 pci in master mode

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Hi,

I'm trying to setup a DWL-AG520 as accesspoint for multiple clients.
Currently, i'm testing the setup with an IBM Thinkpad T40. Module
compiling and loading goes without problems (linux 2.4.27). Then, I
managed to configure the card (no encryption of any kind, fixed card to
802.11b mode with `iwpriv ath0 mode 2`):

icarus root # iwconfig ath0
ath0      IEEE 802.11b  ESSID:"myWlan"
          Mode:Master  Frequency:2.437GHz  Access Point: FF:FF:FF:FF:FF:FF
          Bit Rate:0kb/s   Tx-Power:30 dBm   Sensitivity=0/3
          Retry:off   RTS thr=250 B   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0/94  Signal level:-95 dBm  Noise level:-95 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

The notebook (IBM Connectionmanager) perfectly finds the WLAN. Logging on
goes well too (using static IP config). However, when I try to send data
(icmp, tcp, udp) i experience a packet loss of about 95%. Also, iwconfig
shows this (highly increase of 'invalid misc' packets):

          Rx invalid nwid:3  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:86  Invalid misc:598   Missed beacon:0

Link Quality stays 0, sometimes climbs to 5 or 6.

Does anyone have suggestions on how to fix this?

Thanks,

Emiel Mols