I've seen that you have ported my explorer-script from VistaPE to Win7PE_SE and added many settings on the interface.
It is a great work and explorer works fine.
I have some little optimizations for the script.
in the section hive_load,HKU I add the follow entrys:
Reg_del,"%reg%\Classes\Directory\Background\shellex\ContextMenuHandlers\Gadgets" Reg_del,"%reg%\Classes\DesktopBackground\Shell\Gadgets" Reg_del,"%reg%\Classes\DesktopBackground\Shell\Personalize"
This removes the contextmenuentrys "Gadgets" and "Personalize" from the desktop-contextmenu they are no works. You can also remove the entrys from explorer.reg in reg.7z instead the reg-del commands.
I also seach on the running CD in the registry for C:\ and found one entry from explorer.
Here the correct entry, you must replace it in the winlogon.reg form reg.7z
[HKEY_LOCAL_MACHINE\WB-SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{e437bc1c-aa7d-11d2-a382-00c04f991e27}]
@="IP Security"
"ProcessGroupPolicyEx"="ProcessIPSECPolicyEx"
"GenerateGroupPolicy"="GenerateIPSECPolicy"
"DllName"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,70,\
00,6f,00,6c,00,73,00,74,00,6f,00,72,00,65,00,2e,00,64,00,6c,00,6c,00,00,00
"NoUserPolicy"=dword:00000001
"NoGPOListChanges"=dword:00000000
"DisplayName"=hex(2):40,00,58,00,3a,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,\
00,73,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,70,00,\
6f,00,6c,00,73,00,74,00,6f,00,72,00,65,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,\
00,35,00,30,00,31,00,32,00,00,00
Now the displayname from the dll is link to x:\windows. It is an cosmetical changes.
And last but not least I removed some entrys from active setup in the display-script (controlpanel, Display & Aero). Than no first initalisation for Themes on startup is running.
It is not needed.
Remove the follow entrys in section
Hive_load,Software:
//Reg_Add,0x1,"%reg%\Microsoft\Active Setup\Installed Components"
//reg_add,0x1,"%reg%\Microsoft\Active Setup\Installed Components\{2C7339CF-2B09-4501-B3F3-F3508C9228ED}",,Themes#$sSetup
//reg_add,0x2,"%reg%\Microsoft\Active Setup\Installed Components\{2C7339CF-2B09-4501-B3F3-F3508C9228ED}",LocalizedName,"@#$pSystemRoot#$p\system32\themeui.dll#$c-2682"
//reg_add,0x1,"%reg%\Microsoft\Active Setup\Installed Components\{2C7339CF-2B09-4501-B3F3-F3508C9228ED}",ComponentID,Theme#$sComponent
//reg_add,0x4,"%reg%\Microsoft\Active Setup\Installed Components\{2C7339CF-2B09-4501-B3F3-F3508C9228ED}",IsInstalled,1
//reg_add,0x1,"%reg%\Microsoft\Active Setup\Installed Components\{2C7339CF-2B09-4501-B3F3-F3508C9228ED}",Locale,EN
//reg_add,0x2,"%reg%\Microsoft\Active Setup\Installed Components\{2C7339CF-2B09-4501-B3F3-F3508C9228ED}",StubPath,"#$pSystemRoot#$p\system32\regsvr32.exe#$s/s#$s/n#$s/i:/UserInstall#$s#$pSystemRoot#$p\system32\themeui.dll"
//reg_add,0x1,"%reg%\Microsoft\Active Setup\Installed Components\{2C7339CF-2B09-4501-B3F3-F3508C9228ED}",Version,1#$c1#$c1#$c9
And for IE-Friends you can look here
IE8-Thread
Regards
2aCD
But still not 100% sure where it's coming from...
. 
