With firefox set as the default browser, double-clicking on an html file with a non-ASCII name does not work. Instead, firefox complains that the file cannot be found. Both firefox 1.0 and firefox nightly have this problem. Firefox 0.9.3 works fine and so does Mozilla suite (latest nightly). A Korean user copied 'browser.jar' of 0.9.3 to firefox 1.0 folder and it worked. This means it is a firefox specific regression. Opening the file with 'File | Open'. So does typing 'file:///.....' in the url bar.
Dupe of bug 263570?
thanks for the pointer. *** This bug has been marked as a duplicate of 263570 ***