This is very long-standing and annoying bug in Netbeans. When you run JUNit tests, they are either marked with red and with label "FAILED" or marked green with label "PASSED". But the skipped tests (e.g. those marked with @Ignore) are also marked with green color and label "PASSED". It is extremely confusing. I've already seen many cases when it caused real problems, because people were sure that all tests passed, when in fact all tests were skipped.
In eclipse skipped tests are marked with yellow, labeled "SKIPPED". That's not rocket since. Please, fix it in Netbeans 6.9.1 too - that's probably 10-minutes job to do.
Ignored tests should not be shown in output at all, it's a consequence of how Ant handles that.
If by any chance @Ignore tests are shown as passed please provide more details in #186276.
*** This bug has been marked as a duplicate of bug 186276 ***