This time we talk about an issue of Windows XP Mode.
You change “Default input language” in control panel in Windows XP mode, then system reboots or hibernates. You may find the value changed for “Default input language” will revert to the default value (English(united States)-US) after the XP Mode startup again.
Inside XP Mode, add one registry key as followed
1. Start Registry Editor.
2. Locate and then click the following key in the registry:
3. On the Edit menu, click Add Value, and then add the following registry value:
Value name: IgnoreRemoteKeyboardLayout
Data type: REG_DWORD
Value data: 1
More info: http://support.microsoft.com/kb/322042
Edit: KB 2546883 was published, please refer to it for more details. http://support.microsoft.com/kb/2546883