All my bookmarks have disappeared after last up grade ?? Why

Please read this article: http://kb.mozillazine.org/Lost_bookmarks

Your above posted system details show outdated plugin(s) with known security and stability risks. *Java Plug-in 1.6.0_13 for Netscape Navigator (DLL Helper) *Macromedia Shockwave for Director Netscape plug-in, version 10.1 Update the [[Java]] plugin to the latest version. *http://java.sun.com/javase/downloads/index.jsp (Java Platform: Download JRE) Update the [[Shockwave|Shockwave for Director]] plugin to the latest version. *http://www.adobe.com/shockwave/welcome/