WMS GetFeatureInfoTest failure in Windows, JDK1.5

http://old.nabble.com/GetFeatureInfoTest-failing-locally-ts29245848.html#a29263031

The test that fails:

Tests run: 13, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1.25 sec <<< FAILURE!
testCoverageGML(org.vfny.geoserver.wms.responses.featureinfo.GetFeatureInfoTest) Time elapsed: 0.046 sec <<< FAILURE!
junit.framework.ComparisonFailure: expected:<2[6].0> but was:<2[7].0>
at junit.framework.Assert.assertEquals(Assert.java:81)
at junit.framework.Assert.assertEquals(Assert.java:87)
at org.custommonkey.xmlunit.XMLAssert.assertXpathEvaluatesTo(XMLAssert.java:858)
at org.vfny.geoserver.wms.responses.featureinfo.GetFeatureInfoTest.testCoverageGML(GetFeatureInfoTest.java:221)

I was using jdk1.5.0_16 on Windows.
However, my colleague Victor uses jdk1.5.0_22 which works.
I switched to jdk1.6.0_17 and it worked, then I switched back to jdk1.5.0_16 and proved that the test failed again.
According to this page (http://geoserver.org/pages/viewpage.action?pageId=1277991), we still support java 1.5 JDK, so I'm raising this bug.