This bug is still present in Precise.

Using an A-Link PCI card
("Ralink corp. RT2500 Wireless 802.11bg (rev 01)" according to lspci),
I get about 1.4 Mbit/s regardless of what iwconfig shows, and
so many dropped packets it's practically unusable.

Disabling power management as per comment #161 helped somewhat:
I get higher speeds, up to 10 Mbit/s immediately after boot, but soon
it drops back to 1.4 Mbit/s range. It doesn't, however, drop packets
anymore, so it's usable although sluggish.

(Speeds measured with netperf.)

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https://bugs.launchpad.net/bugs/190515

Title:
  [Hardy][Intrepid] Low bandwidth with rt2400 / rt2500 drivers

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