We have noticed that the cobertura plugin will report 100% coverage on the build overview page even when the code does not have 100% coverage. This is bad as it hides the reason why the build failed. We still have to go and look at the logs to figure out what went wrong, we really a quick glance at the overview page should tell us what we need to know.
I did notice that when our code went from the real 100% to the <100% that little orange triangles showed up beside the 100%. I am guessing that these arrows are supposed to indicate that the coverage went down. However this is way too subtle to notice.
Could you please remove whatever rounding factor you are using for the overview gadget so that the numbers are accurate?
See forum:
http://forum.pmease.com/viewtopic.php?f=1&t=2331