More on Symbol Improvements in VS2012 Update 1

This post details specific improvements to symbol loading in Visual Studio 2012 Update 1: making symbol loading fully cancellable, implementing recording of symbol misses to avoid re-searching paths within a VS session, and enhancing caching for symbols downloaded from network shares (limiting to 5 versions per PDB) and improving handling of invalid cache paths. The Modules window now indicates cancelled loads, and the Symbol Load Information dialog shows reasons for skipped symbols.