Java Known Issues
- Do not use Java with a spoofed useragent, as this may cause crashes [Bug 83376] (JRE issue).
- If you must spoof your useragent, make sure it is reset to the default before restarting your browser.
- Support for the classic Java plugin has been dropped in Firefox 3.1a1 and later [Bug 435334]. Workaround: Use the Java Runtime Environment 6.0 Update 10.
- Firefox 3.0: If Java is uninstalled, the plugin finder service will not prompt to reinstall it [Bug 433502]
- Remove any Java plugin files from your Plugins directory when installing a new JRE release (if present).
- To speed the Java plugin up on Windows, use the Java Control Panel to disable the Java icon appearing in the system tray, and disable the Java console.
- Using Adblock Plus or NoScript with Firefox 3.0 may cause crashes when loading Java applets [Bug 409566]
- The Java plugin may not work if HKLM\Software\mozilla.org\Mozilla\CurrentVersion is missing or inaccessible [Bug 400878, Sun Bug 6620045]
- Always create a symbolic link to the Java plugin, rather than copying it. Copying the Java plugin can cause your browser to crash.
- Sun does not currently have a working Java plugin for x86_64 systems. Use IcedTea7 as a workaround
