Many improvements to the memory management code.
Fixed Ad Muncher browser extension under Firefox 4.0.1 and newer.
Added extra checks to ensure the ad removal counter is saved when shutting down the computer.
Fixed URL opening code in the installer so it won't launch browsers in the administrator context (where Ad Muncher can't filter them).
Implemented a system for swapping new filtering engines into Ad Muncher as needed. Currently being used for testing and development of a new upcoming engine.
Modified the installer to not show a confirmation screen at the end of installing or upgrading. Instead it will now launch Ad Muncher immediately and display a page in the browser that will notify the user if a newer version is available and display the change log.
Finished implementing a new diagnostic logging system, optimized so the performance hit from logging everything doesn't affect diagnostic results, and also designed to efficiently handle the multi-threading of the new engine.
Improved reliability of RSS advert removal.
Opera still haven't fixed a bug that was causing the Opera extension to misread link targets. Implemented an alternative solution (thanks AkbarRi).