I'm new to Adblock Plus (I used to use the normal Adblock) and here are some small annoyances in Adblock Plus compare to Adblock.
-In the Preferences window, you cannot use the arrow key to navigate in the "new filter" textbox. (same thing goes for the editing of existing filters)
-You cannot use Ctrl-V to paste in the "new filter" textbox (forced to use the context menu and select "Paste").
btw, good job on this extended version of Adblock Plus (I love the DIV blocker )