**This issue has been resolved in ArcGIS 9.3.1 Service Pack 2.**
When configuring the Query Attributes Task in Visual Studio, the task configuration dialog box closes unexpectedly when creating multiple Query Entries. Clicking OK on the Form Entry Editor crashes the Query Attributes Properties dialog box and the edits are not saved.
This problem does not occur when only one Query Entry is defined.
This issue applies to creating Web applications using the 9.3.1 version of ArcGIS Server Web ADF for the Microsoft .NET Framework.
This is an issue when using version 9.3.1.