Windows XP
Intermittent crash during dom-level1-core/test_characterdataindexsizeerrreplacedatacountnegative.html ("ASSERTION: illegal refcnt: 'PRInt32(mRefCnt) >= 0', file e:/builds/moz2_slave/m-aurora-w32-dbg/build/xpcom/io/nsStreamUtils.cpp, line 464")
XPConnect