- Script Shield now works with Google Chrome, all versions of Firefox and Acrobat Reader.
- Improvements in WebRep plugins (especially IE).
- Stability improvements in aswSP.sys and the avast! sandbox.
- File system shield: improved on-close scanning.
- Web Shield and Script Shield: more options in the UI.
- Added in-product avast! Market.
- Various other security and stability related fixes.

- New Script Shield - now scanning deeper and supporting more host processes.
- Web Shield now scanning all processes by default.
- Stability improvements in aswSP.sys.
- Better tracking of file sources.
- WebRep now working in new versions of Firefox.
- Under-the-hood improvements in the Behavior Shield and Sandbox modules.
- Solved a compatibility problem with certain Steam-based games.
- Minor improvements in the product UI.
- Various other security and stability related fixes.

- Improved compatibility with Windows Vista SP0/SP1.
- Firewall: solved the compatibility problem with uTorrent.
- Improved load time of WebRep IE plugin.
- Improvements in the silent installer.
- Improved the CommunityIQ sample submission process.
- Improved detection/removal of the most stubborn rootkits.
- Various stability and compatibility improvements in the sandbox module.
- Added new CreditAlert feature (US customers only).
- Added Thai and Serbian language packs.
- Fixed bugs.

- Improved tolerance for corrupted installations.
- Solved a compatibility problem with Malwarebytes Anti-Malware Pro.
- Improved cleaning of rootkits.
- Behavior Shield: improved compatibility with other applications.
- Improvements in the CommunityIQ submission system.
- Various performance and compatibility improvements.

- Added WebRep Chrome extension.
- Setup programs now smaller by ~20%.
- Community features and the Welcome screen can now be turned on/off directly from program settings.
- Solved a compatibility problem with Outpost firewall, ZoneAlarm, GameGuard and sXe.
- Gadget can now be removed by simply closing it.
- SafeZone is now a standalone setup package (can be installed/uninstalled separately).
- Improvements in the program uninstaller.
- Various stability/compatibility improvements.
- Fixed some bugs and a minor improvement.

- AutoSandbox – suspicious programs will be optionally run sandboxed.
- avast! WebRep – browser plugin for website reputation rating.
- Script Shield now even in the Free AV.
- Site Blocking now even in the Free AV.
- SafeZone – a special virtualized area for sensitive transactions.
- Restore factory settings command (Settings -> Troubleshooting).
- Automatic actions in the boot-time scan.
- New compression method in the installer makes the setup packages about 20% smaller.
- Script Shield now functional even with IE8/IE9 Protected Mode.
- Sidebar gadget.
- Improved stability/compatibility of the Behavior Shield.
- Improvements in the avast! sandbox.

- Solved compatibility problems with several third-party applications.
- Performance related improvements.
- Various UI related improvements.
- Fixed bugs.

- Boot-time scanner now available even in 64-bit Windows.
- Big improvements in the Behavior Shield.
- Improvements in the antirootkit engine.
- Improvements in the cleaning module.
- Stability/performance improvements in the Web Shield.
- CommunityIQ improvements.
- Added support for sound packs.
- Minor improvements in the user interface.
- Minor fixes in the firewall.

- Performance and stability improvements in the avast! sandbox.
- Changes in the engine allowing us to generically detect/block some new types of exploits.
- Speed improvements in the updater.
- IS: improvements in the Outlook antispam plugin.
- IS firewall: improvement in the path name matching.
- IS: upgraded to the new version of antispam engine.
- Minor changes and fixes in the GUI.
- Added Danish, Hebrew and Urdu language packs.

- Improved interaction with Windows System Restore.
- aswSP.sys: solved a minor stability issue.
- Solved a problem related to inserting of the license files.
- Added the activation code feature.
- Solved a problem when avast was progressively slowing down.
- Performance improvements in the Behavior Shield.
- avast Screen saver now accessible even in 64-bit Windows Vista.
- Stability improvement in aswTdi.sys.
- IS firewall: solved a potential BSOD condition.
- Various improvements in the avast! sandbox module.
- Minor fixes in the GUI.
- Added Catalan and Belarusian language packs.