- higher performance of the scanning engine (especially on new CPUs) and faster start of the avast! system service on OS boot - improved support for Windows Vista (added support for NTFS transactions (also known as TxF) etc.) - improved detection of full-screen applications - fixed a bug related to the demo licence not being installed during silent installs - improved compatibility with Windows offline folders - more improvements in executable unpackers - minor fixes in the ZIP unpacker - fixed Runtime error R6034 messages when Mozilla Thunderbird version 3.0 is installed - suppressed double scans when the user selected a local disk scan plus a folder scan (with the folder residing on the local disk) - added Catalan language module