Today I have tried downloading aircrack-ng and the backtrack but found the bandwidth to be unreliable. BackTrack even took 14 times to download. Maybe this is because of the number of people downloading the file at once, or maybe its just bad bandwidth. Anyway, I have created several download mirrors from various file hosts in various countries to help. Most of these file mirrors are reliable and very fast. Using these mirrors will also save AirCrack's bandwidth.