Why is my search taking so long?
Exact searches are almost always very quick, but generalised searches may be much slower. The selection mode (available within the Mogul search settings dialog box) provides some control over the speed of generalised searches, the relevance of the hits they find, and the size of the resulting distribution.
The Optimise for speed option gives the fastest generalised search speeds but will probably not find the most relevant fragments possible. For further information on configuring searches, please refer to the Mogul User Guide.