Bug#494569: madwifi-source: 0.9.4+r3772.20080716-1 extremely slow transfer rates, not useable

[initiators]

Package: madwifi-source
Version: 1:0.9.4+r3772.20080716-1
Severity: important


My WiFi card is a D-Link DWL-G650 (PCMCIA). lspci -v gives :
03:00.0 Ethernet controller: Atheros Communications Inc. AR5212/AR5213 Multiprotocol MAC/baseband processor (rev 01)
	Subsystem: D-Link System Inc Device 3a12
	Flags: bus master, medium devsel, latency 168, IRQ 10
	Memory at d4000000 (32-bit, non-prefetchable) [size=64K]
	Capabilities: [44] Power Management version 2
	Kernel driver in use: ath_pci
	Kernel modules: ath5k, ath_pci

Doing a aptitude update is extremely slow (30-40 KB/s). I haven't tried too much with this version but it seems to be the very same behaviour as the 
n-1 version, transfer stops during aptitude safe-upgrade after a few MB have been downloaded.

I went back to version n-2 which is OK. Don't know the exact version number, the package built by module-assistant is called 
madwifi-modules-2.6.25-2-686_0.9.4~rc2-1+2.6.25-6_i386.deb

I'm using wpa-psk on my WiFi AP, and I'm using IPv6.

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.25-2-686 (SMP w/1 CPU core)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages madwifi-source depends on:
ii  bzip2                         1.0.5-0.1  high-quality block-sorting file co
ii  debhelper                     7.0.15     helper programs for debian/rules
ii  module-assistant              0.10.11.0  tool to make module package creati

madwifi-source recommends no packages.

Versions of packages madwifi-source suggests:
pn  kernel-pac <none>                        (no description available)
ii  madwifi-to 1:0.9.4+r3685.20080531+dfsg-1 tools for the Multiband Atheros Dr

-- no debconf information