Ever since I installed Tortoise SVN I saw that the right-clicks on my Windows XP SP2 had been terribly slow. It seems like Tortoise performs a whole lot of caching. Every time you right click all the cache entries are browsed and updates are sought. Although, the interface provides ways to disable this overlay caching, it seemed to me that the caching was being performed regardless. I had to uninstall the client to restore the sanity of my right-clicks. I guess software designers should make design decisions such that the UI responsiveness is not compromised for Windows Shell extensions.