I have a fast internet connection on fibre 100Mbit up and down. When testing with tptest that tests speed w-out browser I get around 95Mbit up and down, ping 3ms. But with firefox I have downloadspeed only around 10Mbit and can send files with 85Mbit speed. (With IE it´s download 61Mbit and sending 35Mbit) Puzzling! I use a quite slow netbook, the first EeePC 700 w 2G RAM, XP and Firefox 3.6. I have just reinstalled windows and formated C to clean out computer but did not change anything with firefox. Have disabled puligns-addons and gone through all virus and malware scans possible. Older version 2 something was faster about 25Mbit download but still that is far from available speed.