Searchindexer.exe high Disk CPU Memory usage

If you perform a search in the Start menu or in Windows Explorer by using wildcard characters in Windows 7 or Windows Server 2008 R2. For example, you search "ren*1". In this scenario, the memory usage of Searchindexer.exe increases and does not decrease as expected after the search.

For such cases you can download and apply hotfix for Windows 7 from KB2823655.