I have an Intel Centrino Advanced-N 6205 wireless card on my Dell E6530 laptop, and am using FreeBSD 9.1 RELEASE for a week now. I have serious connectivity problems: 20%-100% packet loss when pinging my router. I've booted from an Ubuntu USB stick and got there 0 out of 300 packets lost, so I find it very unlikely to be a hardware problem. How can I debug/solve this? Thank you for any help.