I am using ReSharper 4.5, and what often happens when I am converting explicit properties into auto-properties, is that I will accidentally chose \"Add XX to abbreviations list\
In Resharper 6.1 (beta) its slightly different to v6.0, its under
ReSharper/Options/Code Editing/C#/C# Naming Style/Advanced Settings
Then the box at the bottom is called "Abbreviations as plain text (UPPER CASE only):"