Originally Posted by DiscipleDOC
Install another LAN card and see if you get different results. You may have a bad internal nic.
ON THE SAME COMPUTER UNDER LINUX OS system - EVERYTHING works fine, so it isnt hardware at all, its software or firmware bug.
And i also am wondering why under Speed Duplex Settings i have ONLY 10 and 100 mbits options and no 1Gbit option ??? only with auto it connects to 1gbit but still sometimes long slows down (and ofcourse nothing is using disk or cpu)
take a look here: