Those of you using Firefox, or the clones Iceweasel or Icecat, may not be aware that the network link prefetch downloading can substantially degrade speed performance. This simple mod can make quite a difference in page loading times:
In the Filter of “about:config†page (top of the page) put “network.prefetch-nextâ€. Set “network.prefetch-next†to false. Network link prefetch will download all pages with the rel=â€prefetch†tag, with false you avoid that downloading.