asa-f01(config)# failover lan int fo Management0/0.709
Oct 25 2007 08:52:17: %ASA-7-609002: Teardown local-host fo:10.10.60.42 duration 0:10:56
Oct 25 2007 08:52:17: %ASA-7-609002: Teardown local-host NP Identity Ifc:10.10.60.41 duration 0:10:56
ERROR: Can not configure failover interface on a shared physical interface
vPif_getVpif: bad vPifNum(0xffffffff) from 87D4573 from 833FC71
vPif_getVpif: bad vPifNum(0xffffffff) from 87D6641 from 8331288
Oct 25 2007 08:52:17: %ASA-5-111008: User 'enable_15' executed the 'failover lan int fo Management0/0.709' command.
asa-f01(config)# Oct 25 2007 08:52:17: %ASA-6-720032: (VPN-Primary) HA status callback: id=3,seq=200,grp=0,event=401,op=0,my=Active,peer=Standby Ready.
Oct 25 2007 08:52:17: %ASA-6-720024: (VPN-Primary) HA status callback: Control channel is down.
Oct 25 2007 08:52:17: %ASA-6-721002: (WebVPN-Primary) HA status change: event HA_STATUS_PEER_CTL_COMM, my state Active, peer state Standby Ready.
vPif_getVpif: bad vPifNum(0xffffffff) from 87D3E01 from 83384CE

Thread Name: fover_health_monitoring_thread (Old pc 0x08339b95 ebp 0xd4f11720)
Page fault: Address not mapped
    vector 0x0000000e
       edi 0x099bbc60
       esi 0x00000000
       ebp 0xd4f116f0
       esp 0xd4f116e8
       ebx 0x00000000
       edx 0x00000040
       ecx 0xd4f11584
       eax 0x00000000
error code 0x00000004
       eip 0x083a730a
        cs 0x00000073
    eflags 0x00013286
       CR2 0x00000094

Cisco Adaptive Security Appliance Software Version 8.0(2) 

Compiled on Fri 15-Jun-07 19:29 by builders
Hardware:   ASA5510
Crashinfo collected on 08:52:18.036 CET Thu Oct 25 2007

Traceback:
0: 0805976e
1: 08059ea1
2: 088da6f9
3: dd7a86d5
4: dd6a71e0
5: 083384d8
6: 08339c8b
7: 0805e033
Stack dump: base:0xd4f0f840 size:8192, active:472
 entries above '==': return PC preceded by input parameters
 entries below '==': local variables followed by saved regs
             '==Fn': stack frame n, contains next stack frame
                '*': stack pointer at crash

etc, etc