•     Tabbed browsing gives you a better way to surf the net. You no longer have to open one page at a time. With tabbed browsing, open several pages at once with one click. Plus, your homepage can be multiple pages, in tabs.
•     Popup blocker lets you surf the web without interruption from annoying ads.
•     Image Manager lets you block images to remove offensive images or speed up the rendering of web sites.
•     Find as you type gives you another way to navigate a page. Just start typing to jump from link to link or to find a word or phrase within a page.
•     Plus all the features a modern browser should have including: Advanced security settings; Password, Download, and Cookie managers; Themes; multi-language and multi-platform support; and, the latest in Web Standards.

Change Log:

• # Features
• * New locales: Ukrainian (uk) (bug 726486), Chinese (Traditional) (zh-TW).
• * The File and Move Bookmarks dialogs are resizable now.
• * Lightning toolbars can be customized now.
• * HTML5 videos that do not start automatically show a large play button now.
• * The Download Manager window supports lightweight themes (Personas) now.
• * Ctrl+Shift+K as shortcut for the Lightning Task Quick Filter is supported now.
• * Unsorted Bookmarks has been added to the Bookmarks menu and the Personal Toolbar has been renamed to to Bookmarks Toolbar.
• * Sounds are now played using libcanberra instead of esound on Linux.
• * Sync can sync installed add-ons now (provided they are available from AMO).
• * Bookmark This Link has been added to feeds' Website header link context menus.
• * "Open in Browser" was added to the context menu for opening a website from RSS.
• * Attachments on compose windows can be renamed using F2 on Windows and Linux now.
• * Addresses can be dragged from the the address book sidebar now.
• * Pasting a URL from the clipboard into the Download Manager window will download it.
• * The Feed Subscribe dialog remembers where you place it now.
• * A Print button can be added to the compose window toolbar now.
• * Spelling settings now have their own preferences pane under Appearance.
• * Plugins can be disabled for the whole suite now in addition to Mail & Newsgroups only.
• * Support for other message storage formats (pluggable mail stores) has been added.
• To enable the new Maildir format (instead of the default Mbox) for new accounts, set mail.serverDefaultStoreContractID to "@mozilla.org/msgstore/maildirstore;1". There is no UI for any of this yet.
• # Fixes
• * The chrome directory was missing in fresh profiles.
• * An IPv6 address literal was not usable as a MailNews server name.
• * "View Background Image" in the context menu for stand-alone video content has been disabled.
• * Some RSS feeds were not properly recognized.
• * Errors attaching anchor parts when sending mail could lead to issues with fancy signature files.
• * The UI could freeze on feed biff/get new messages.
• * MIME parts in a multipart/related context that were not referred to or could not be displayed inline were not available as attachments.
• * The onchange and input events were not fired for all form elements on restore.
• * Background tabs were not set to an inactive state.
• * A MIME part with content-disposition: attachment was not displayed as an attachment if it did not have a filename.
• * The Print button in the MailNews toolbar was misaligned with the Modern theme.
• * LDAP address book results were not sorted when autocompleting was active.
• * Marking as Junk with "Delete mail marked as junk" set undeleted deleted mail.
• * Auto-save will not happen anymore if a message is currently being sent.