User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030529 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030529 Just imagine, that mozilla itself was set as a helper application for some mime-type or extension. Then when trying to open file of this type mozilla start to open new window in infinite loop. Reproducible: Always Steps to Reproduce: 1. Set Mozilla helper apps for some strange mime-type (extension) 2. Open file of this type in Mozilla 3. Actual Results: Mozilla start to open new window in infinite loop. Kill parent window (or quickly close all windows) Expected Results: Hard to tell, realy. I see tree possible solutions: 1) prevent user from setting Mozilla as helper, 2) open such files as text-plain (so new window would not open file in loop), or maybe easily give message to user when user try to set mozilla as a helper, that it is not safe.

Confirmed. I had this happen once. I believe the extension was .SGML or something similar. Got stuck in a nasty loop with dozens of windows open. Had to kill it hard then unset the association.

*** Bug 210807 has been marked as a duplicate of this bug. ***

extension of that page is .asp , mime-type is .wml

*** This bug has been marked as a duplicate of 167320 ***

vrfy