Comment 13 for bug 384924

I noticed that on Debian Squeeze with iwlagn (Intel WiFi Link 5100 in a Dell Latitude 2100) and power management enabled, I get very poor network performance: high packet loss and large latencies. The laptop-mode-tools package by default enables power management for iwlagn via /etc/laptop-mode/conf.d/wireless-iwl-power.conf when the laptop is on battery power. Ubuntu may not work the same way, but use iwconfig to see if your wireless device has power management enabled when your wireless connection goes bad.