I discovered a bug in our code. DownloadManager.java, method getBundleURLs: File tmp = new File(getBundlePath(), "urls." + getCurrentProcessId() + ".properties"); tmp.deleteOnExit(); downloadFromURL(url, tmp, "", false); We are trying to write to c:\program files\jre6\lib\bundles\urls.xxx.properties, which will fail for sure on Vista running IE 7 promoted mode. Under medium integrity, it will work but the file will be written to the virtualized directory. Under high integrity the actual write will work.
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