(help)random freeze at boot

[dhcp]

sometime my boot stop working... as you see in the pictures.. (verbose mode)

 

when it happens I reboot manually and the freeze happens in a different point, without any modification by me.

 

often the freeze come after fakesmc loading

 

after many reboot all goes well and osx starts whitout problems

 

same situation if I use hazard dvd boot manager... sometime freeze, second time all goes well..

 

 

 

here my com.apple.Boot.plist

 

<dict>

<key>DSDT</key>

<string>/Extra/dsdt.aml</string>

<key>GraphicsEnabler</key>

<string>y</string>

<key>Kernel</key>

<string>mach_kernel</string>

<key>Kernel Flags</key>

<string>-v arch=i386</string>

<key>Quiet Boot</key>

<string>Yes</string>

<key>Wake</key>

<string>No</string>

</dict>

 

 

osx is on exernal usb disk

EDIT:

 

I use boot file with chameleon v2.0 rc5 r749, I found it (boot file only) in a tutorial package for my notebook.

 

If I use other chameleon I have infinite restart loop

 

any suggestions?