I haven't finished the dump yet, but in case this is a known issue, I updated ia64 to 10.2-STABLE #16 r289997. On reboot in multi-user mode: Starting file system checks: /dev/da0p2: FILE SYSTEM CLEAN; SKIPPING CHECKS /dev/da0p2: clean, 10613586 free (169426 frags, 1305520 blocks, 1.0% fragmentation) Mounting local file systems:. Writing entropy file:. Setting hostname: xxxx fatal kernel trap (cpu 0): trap vector = 0x14 (Page Not Present) cr.iip = 0xa000000001e72830 cr.ipsr = 0x1210080a6018 (ac,mfl,ic,i,dt,dfh,rt,cpl=0,it,ri=1,bn) cr.isr = 0xa0400000000 (code=0,vector=0,r,ei=1,ed) cr.ifa = 0x101a400000001 curthread = 0xe0000000122716d0 pid = 173, comm = kldload panic: trap cpuid = 0 KDB: stack backtrace: Uptime: 9s Dumping 8172 MB (25 chunks) chunk 0: 1 pages ... ok chunk 1: 159 pages ... ok chunk 2: 256 pages ... ok chunk 3: 7680 pages ... ok chunk 4: 8192 pages ... ok chunk 5: 239734 pages ... ok chunk 6: 748 pages ... ok chunk 7: 533 pages ... ok chunk 8: 21 pages ... ok chunk 9: 1048574 pages / Thanks Anton