I have a 21041 card made by Linksys which has a 10BT and 10B2 connectors on it. I upgraded my kernel from 2.4.3 to 2.4.9 and the card stopped working. The link light is on but it won't send or receive anything. I've tracked down the problem to kernel version 2.4.5. Everything works fine with 2.4.4 and earlier. Please let me know what other information you require. John