I'm pretty new to Hudson too, but I like it so far. It's really easy to set up automated builds. As far as I can tell, "S" stands for success. You get a blue ball for success, red for failure, and yellow for unstable. I think "W" must stand for weather. I'm not sure how it decides what the weather is, but it seems to depend on the last few builds. If you hover over the weather icon you get some stats about the last 5 builds. It looks like JBossSeam-sun15 even has some code coverage stats as part of the calculation. Stan Dennis Byrne wrote: