GUI Improved: add "Task Tags" page to Options dialog, default download folder for each tag can be set here. GUI Improved: improve "Directories" page in Options dialog, task tags for each candidate download directory can be set here. GUI Improved: set task tag and default download folder for new task automatically according to file extension name. GUI Improved: improve drop list of save folder in task properties dialog, display candidate download directories and corresponding tags GUI Improved: add "Set as Default Directory" button in BT task properties dialog GUI Improved: add "Super Seeding" option in advanced page of BT task properties dialog GUI Improved: add BT task log list GUI Improved: add preview/open button in BT task file list GUI Improved: display user group info in peer list of BT task in blue Core Improve: support Super Seeding for BT task (for initial seeding server only) Core Improve: improve preview download mode for BT task Core Improve: improve connection algorithm of Long-Time seed Core Bugfix: save task list failed in Vista/Win7 64bit Core Bugfix: data in first/last piece of file may not be saved properly when select part of files in BT task to download Core Bugfix: failed to remove torrent file with read-only attribute in program data folder when remove BT task