Consider the following scenario:

• You have a computer that is running Windows XP or Windows Server 2003.
• You run a WebBrowser control application for a long time.

In this scenario, you may notice that system performance drops significantly. Additionally, if you use a performance monitor tool to monitor the system’s performance, you find evidence of a memory leak in the Msctf.dll component.

This issue occurs if the following conditions are true:

• Under Regional and Language Options in Control Panel, you click to clear the Turn off advanced text services check box.
• The value of the LoadIMM registry entry is set to 1 in hexadecimal format.
  Note: This registry entry is located under the following subkey:

  HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\CurrentVersion\IMM

You may also encounter this problem on a computer that is running Windows Vista.