I was just investigating the pppoe-problem I reported here earlier today with tcpdump. I was running tcpdump on the real 
interface, not the virtual pppoe0. After the tests, I pressed ctrl+c, and BLAM! The network connection died. After the 
automatic reboot, I get:

Apr 22 21:06:12 psychedelic savecore: reboot after panic: panic: amap_wipeout: corrupt amap

Is this something new, or a known situation? I have the core files, but absolutely no idea as to what to do with them.