Did you delete large amount of data? If YES, go to Tools->Compact and Repair and choose "Compact Database":
http://www.kinook.com/UltraRecall/Ma...pairdialog.htm
"Compact database: If this check box is checked when OK is clicked, the current Info Database will be shrunk, removing any free space.
Note: Ultra Recall uses a highly efficient, binary format for Info Database files. As Info Items are deleted, empty space remains within the file, and is reused when new data is added to the Info Database. If you delete a large amount of data, you can immediately shrink the Info Database, removing this free space by using the provided Compact functionality."