In ArcToolbox (either ArcMap or ArcCatalog) when I use the browse buttons within a tool, all enumerated contents are listed backwards in descending alphabetical order. See attached images. I noticed this about a week ago, April 7, 2010. It doesn't affect the functionality of ArcGIS, but it drives me crazy having the directories listed in Z to A order. The enumeration for the Add Data dialog and other lists within ArcGIS are in correct order. This just seems to be an oddity with ArcToolbox. Does anyone know how I can fix this? I'm running ArcGIS 9.3.1. SP1 on Wnidows XP.