I am trying to run vagrant inside a VM and unfortunately it fails at random counts (It used to fail every other time). But when I set the log level to debug and run vagrant up it does not error out. Looking for advice on how to debug this issue.

host machine: rhel 6.5 (Santiago) 2 core 4G ram, ESXi 5.1
guest machine: rhel 6.5 (Guest Additions Version: 4.1.18)/centOS 6.5 (Guest Additions Version: 4.3.8)

Vagrant version - 1.6.5 
VirtualBox 4.3.20
Chef Development Kit Version: 0.3.6
vagrant plugins
vagrant-berkshelf (4.0.2)
vagrant-login (1.0.1, system)
vagrant-omnibus (1.4.1)
vagrant-share (1.1.3, system)

failed run 

```
Bringing machine 'default' up with 'virtualbox' provider...
    default: The Berkshelf shelf is at "/root/.berkshelf/vagrant-berkshelf/shelves/berkshelf20150206-18541-kdy12t-default"
==> default: Sharing cookbooks with VM
==> default: Importing base box 'rhel65-1.0.0'...
==> default: Matching MAC address for NAT networking...
==> default: Setting the name of the VM: XXXXXXXXXX_1423257225720_47393
==> default: Clearing any previously set forwarded ports...
==> default: Updating Vagrant's Berkshelf...
==> default: Resolving cookbook dependencies...
==> default: Fetching 'XXXXXXXXXX' from source at .
==> default: Using XXXXXXXXXX (1.2.0) from source at .
==> default: Vendoring XXXXXXXXXX (1.2.0) to /root/.berkshelf/vagrant-berkshelf/shelves/berkshelf20150206-18541-kdy12t-default/XXXXXXXXXX
==> default: Fixed port collision for 22 => 2222. Now on port 2200.
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
    default: Adapter 1: nat
    default: Adapter 2: hostonly
==> default: Forwarding ports...
    default: 22 => 2200 (adapter 1)
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
    default: SSH address: 127.0.0.1:2200
    default: SSH username: vagrant
    default: SSH auth method: private key
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
    default: Warning: Connection timeout. Retrying...
Timed out while waiting for the machine to boot. This means that
Vagrant was unable to communicate with the guest machine within
the configured ("config.vm.boot_timeout" value) time period.

If you look above, you should be able to see the error(s) that
Vagrant had when attempting to connect to the machine. These errors
are usually good hints as to what may be wrong.

If you're using a custom box, make sure that networking is properly
working and you're able to connect to the machine. It is a common
problem that networking isn't setup properly in these boxes.
Verify that authentication configurations are also setup properly,
as well.

If the box appears to be booting properly, you may want to increase
the timeout ("config.vm.boot_timeout") value.

```

***UPDATE***:
I took a snapshot of my VM, based on the instructions from this blog: <http://www.dedoimedo.com/computers/virtualbox-screenshot.html>

The error I get in the guest VM:

```
MP-BIOS bug: 8254 timer not connected to IO-APIC
kernel panic - not syncing: IO-APIC + timer doesn't work! Boot with apic-debug and send a report. Then try booting with the 'noapic' option.

pid: 1, comm: swapper Tainted: G W -------- 2.6.32-431.el6.x86_64 #1

```