I got some noticeable (but still not reaching Win-to-Win speeds) improvements on Gigabit network when I replaced the NIC (and kernel modules, obviously). For some reason motherboard built-in Gigabit adapters are getting better results. I also noticed some strange degradation of HD performance when LVM is built on top of RAID (all Ubuntu server 8.10).

The rebuttal article (http://www.rsoc.ru/main/about/858/887.shtml?id_news=628) cites a government regulation stating that any device in 2.4GHz range with transmission power less than or equal 100mW is NOT subject to registration. Google automatic translation did not do a good job on that particular piece, that might have caused the panic.