Did you try to uninstall WeatherBug in Safe Mode? Try it in normal mode also (even though you removed/deleted the folder, there may be other registry entries that needs to be removed).
Your log is clean. If you disabled System Restore, make sure to enable it now.
To help prevent future spyware installations/infections, please read the Anti-Spyware Tutorial (
http://www.greyknight17.com/spyware.htm#prevent) and use the tools provided.
Are there any problems now? If not, you should be set to go.