I have tested on a machine running only ArcGIS 10 Desktop, I do the following:
1. Select a feature.
2. Zoom to selected feature.
3. Validate Topology In Current Extent. The feature is unselected.
The selection disappears when Esri Production Mapping 10 or ArcGIS Data Reviewer 10 are not installed on the machine.
It seems that this is an issue with the core ArcMap functionality and not with Production Mapping or Data Reviewer.