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First post here on insanelymac! Thanks for the tip about changing permissions on Library and Preferences, works great. As Michael Tyson had said, the OSX driver doesn't use the full power of the RTL8187l. The reason why is a region-locking issue. In the US the TX power is limited to 27dB. In other regions, such as Bolivia, you can use the full 30dB power. When I run Backtrack Linux (in Virtualbox) I've been able to change the region and TX power setting: I originally found this on this blog: http://store.rokland...backtrack-5-bt5 In Mac OSX there is no iwconfig command and ifconfig doesn't allow for the commands to change the region and power setting as far as I know. Anybody have any ideas?