Unfortunatly it says 'This plugin has security issues' and users have to accept this barrier first. Using Firefox 19.0, Java 7 Update 15 (build 1.7.0_15-b03) on OSX 10.7.5

I confirm, it works fine now!

I get the following error on the demopage: java.lang.ClassNotFoundException: ch.randelshofer.quaqua.subset.QuaquaLionFileChooserLAF Environment Details: [INFO] MApplet - JFileUpload 3.0 Build FINAL.001 [INFO] G - Auto-detect proxy settings (ps): DIRECT [INFO] G - Auto-detect proxy settings : host = ...

Yes, the workaround helps. Instructing our clients on using it keeps us busy for almost a year now

Firefox 6.0. Still the same problem. Many customers call us and we have to explain workarounds or share documents with DropBox. Seems we have to wait for FF developers to work on it. However they generally make a very good job and hopefully this issue gets soved soon..