Comment 28 for bug 621265

Same issue here, with an Asus notebook. Wifi bandwidth was perfect until Maverick 10.10 ! It's very slow now.

$ dmesg | grep 3945
[ 21.734034] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:s
[ 21.734038] iwl3945: Copyright(c) 2003-2010 Intel Corporation
[ 21.734111] iwl3945 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 21.734126] iwl3945 0000:03:00.0: setting latency timer to 64
[ 21.788661] iwl3945 0000:03:00.0: Tunable channels: 13 802.11bg, 23 802.11a channels
[ 21.788664] iwl3945 0000:03:00.0: Detected Intel Wireless WiFi Link 3945ABG
[ 21.788816] iwl3945 0000:03:00.0: irq 45 for MSI/MSI-X
[ 21.797260] phy0: Selected rate control algorithm 'iwl-3945-rs'
[ 27.296988] iwl3945 0000:03:00.0: loaded firmware version 15.32.2.9

There is any workaround ?