Consider the following scenario. You perform certain kinds of complex custom queries on a Microsoft Office SharePoint Server 2007 site or a Windows SharePoint Services 3.0 site. These custom queries cause the search service to restart unexpectedly. The search service takes several minutes to restart. In this scenario, search results are not available or are available with bad performance.
Note If the same kind of complex custom query is performed repeatedly, the search service continuously restarts. Therefore, the search function may be unavailable.
To resolve this issue, apply the following hotfix packages:
2276469 Description of the Windows SharePoint Services 3.0 hotfix package (Sts-x-none.msp): August 31, 2010
2276465 Description of the Office SharePoint Server 2007 Cumulative Update server hotfix package: August 31, 2010