http://adblockplus.org/en/changelog-0.7.5.4
https://addons.mozilla.org/en-US/firefox/addon/1865Detailed changelog for Adblock Plus 0.7.5.4
* Default keyboard shortcuts have been changed to Ctrl+Shift+E (preferences) and Ctrl+Shift+V (blockable items) due to conflicts in Firefox 3 and Thunderbird (blog post)
* “Check banner links” option has been removed (forum thread), element hiding rules should be used as a replacement
* Whitelisting rules now apply to element hiding rules as well (bug 14814) (won’t work properly in Firefox 3, see known issues)
* Hebrew (he-IL) and Malay (ms-MY) translations added
* Added support for new request types in Firefox 3 like XBL or XMLHttpRequest (documentation)
* Support for Songbird 0.4 and 0.5 added, now almost everything should work like in Firefox
* Songbird 0.2/0.3 support dropped
* Added support for eMusic Remote 1.0
* Support for Moblin browser added — untested
* Fixed filter editing issues caused by bug 372769 (Firefox 3 only)
* Fixed: Links in Adblock Plus dialogs don’t open (Thunderbird only)
* Fixed: Input focus not put back to the filter list after editing a filter (Firefox 3 only)
* Fixed: The entry “No blockable items on current page” in the list of filter suggestions should not be selectable
* Fixed: Error messages when inserting filters in Preferences
* Fixed: Account for new XUL iframe behavior in Firefox 3
* Content policy now returns “blocked based on server” to trigger special handling in Firefox 3
* “Flash borders” in list of blockable elements will blink longer (forum thread)
* Fixed: Keyboard shortcut to close detached list of blockable items is not configurable
* K-Meleon: Done some major code refactoring
* K-Meleon: Added support for K-Meleon 1.5 (currently alpha)
* K-Meleon: Dropped support for K-Meleon 1.0
* K-Meleon: Status bar icon now reacts to middle-clicks and has a context menu (K-Meleon 1.5 only)
Known issues
* Element hiding hits are not always registered in Firefox 3, this also prevents whitelisting rules to apply to element hiding (bug 425057)
* Songbird: Context menu doesn’t always show up in Songbird, consequently not all items can be blocked via context menu
* eMusic Remote: Links in Adblock Plus dialogs load in current tab instead of opening a new one
* K-Meleon: Not working with K-Meleon 1.5 Alpha 2 due to a K-Meleon bug (bug 978)