Unofficial Firefox 0.9 changelog

Data Migration. Import bookmarks, saved passwords, cookies, history, form auto-complete data, and options from Internet Explorer. Import some of these things from the Mozilla suite, Netscape 4, and Opera.
Extension/theme manager.
Update notification.
Help.
210043 - "Copy Image" on image context menus (Windows and Mac).
There is a new option to prevent sites from disabling the context menu under Options > Web Features > Advanced.
182928 - Set as Wallpaper dialog that lets you choose tiled/centered/stretched. The dialog also prevents you from accidentally setting a porn image as your wallpaper, blowing away your previous wallpaper, etc.
189888 - Show a warning dialog when closing a multi-tabbed browser window.
176675 - Dragging text to search bar should search for it; dragging URL to address bar should go there.
171605 - Allow deletion of form auto-complete results (Shift+Delete).
64485 - [Linux] Intellimouse Explorer Backwards and Forwards button support.
Support for smb:// and sftp:// URLs in Linux/GTK2 builds using the gnome-vfs library.
Linux/GTK2 installer.
Linux/GTK2 version now includes the Talkback crash reporting utility.
Right-click a form textbox and select "Add keyword for this search" to set up bookmark keywords easily.
Address bar auto-fill (inline auto-complete) with hidden pref "browser.urlbar.autoFill".

New default theme. A new theme, Winstripe, replaces Qute as the default theme. Winstripe is based on Firefox's Mac OS X theme, Pinstripe.
Improved stability. Many users of Firefox nightly builds reported crashes using the included Talkback utility, allowing Firefox developers to identify the the most common crashes and fix them.
Smaller download. The Windows installer version now uses 7-zip compression instead of standard zip compression (244026), and some cruft from the Mozilla suite was removed (243091), resulting in a 4.7MB download.
216432 - Don't steal associations for images, xml, xul, and the ftp protocol.
197919 - It it now harder for sites to evade the pop-up blocker (whitelist of events that are allowed to pop up new windows).
Make newer versions of the Windows Media Player control work in Firefox [Installer].
231995 - String changes made Firefox 3% faster.
55690 - Files being downloaded are now moved to the target directory (with a temporary ".part" extension) as soon as the user selects the desired location.
58305 - "Find in This Page" now searches in form textboxes and textareas.
56472 - Focusing form element does not clear selected text in page.
History and Bookmarks now work better with IDN.
92769 - Unblock port 1080.
Very wide images (more than 4095px) will now display on Mac.

68215 - onbeforeunload event. This lets web application developers add code that alerts the user about potential data-loss when closing a web application, or when leaving a HTML page with potentially sensitive information.
93156 - CSS3 opacity. (-moz-opacity is now an alias for opacity.)
15608 - Adjacent combinators now work dynamically (e.g. :hover +).
230343 - CSS2.1 cursor:progress (hourglass, beach ball, etc).
135141 - ~ (indirect adjacent combinator).
Support for Kerberos HTTP authentication using GSSAPI (benefits Unix-like platforms including Linux and OS X).
Liveconnect now works when a Java applet's codebase is in a different domain.

205893 - Loading lots of images makes Firefox stop repainting.
229600 - Installing 2 extensions without restarting re-launches extension-installer for previous installed extensions.
57607 - background images do not load in background windows.
217369 - gamespot.com pages sometimes too wide/messed up on first load.
204706 - the cursor should remain at the end of the text field when arrowing down through completions.
56219 - [Linux] Can't paste over 4000 bytes from another app into Mozilla.
184433 - Internet Keywords triggered by "connection refused" errors (e.g. http://localhost/ went to http://www.localhost.com.au/ if no server was running on localhost).
192022 - Web page progress bar in status bar rarely works when browsing, stays blank.
54538 - selecting sometimes jump-scrolls down a page or more (e.g. while scrolling by dragging) (WFM).
197375 - Hebrew or Arabic text reversed by copy/paste.
205550 - Mozilla web services (WSDL, SOAP) leak memory.
240759 - DNS cache stops working.