uberAgent is not only lightweight and unobtrusive, it also creates only a minimal set of files and registry keys during installation that can be removed easily.
If you want to remove uberAgent from a machine please use the installer's uninstall functionality from Programs and Features. The following list is intended as a reference.
File System Changes
All files required by uberAgent go into the installation directory selected during setup (typically c:\Program Files\Helge Klein\uberAgent). During operation, only a single additional file is created, uberAgent's log file.
uberAgent stores installation and runtime state information to the key HKEY_LOCAL_MACHINE\SOFTWARE\Helge Klein.