Do not reuse VHIDS!
Just found a common problem that people are doing.
You need a unique VHID PER ip address. Don't resuse the VHIDS!
Code is in place to prevent this in future versions but be aware from anything previous to RC2g does not check.
If you accidentally DO reuse VHIDS, chances are your box is going to core every boot. To manually fix this without reinstalling:
1. Disable all NIC's
2. Reboot into a shell, manually edit /cf/conf/config.xml and remove the corresponding VIP that has a duplicate VHID.
3. rm /tmp/config.cache
4. Reboot with NIC's enabled.