3 февраля 2010 года вышла финальная версия самого популярного торрент клиента – µTorrent 2.0.

Почти новый интерфейс (изменения коснулись некоторых диалоговых окон и дефолтного скина ) Полная поддержка UDP трекеров Поддержка µTP, TCP Rate Control -- 2010-02-22: Version 2.0 (build 18296) - Fix: uTP sampling error (caused speed drops every 60 seconds) -- 2010-01-25: Version 2.0 (build 17920) - Change: update TCP/IP overhead estimation - Fix: handle wrapping in uTP timestamps - Fix: Crash in setup dialog when dialog is exited before server list is downloaded. -- 2010-01-21: Version 2.0 RC4 (build 17875) - Change: Speedguide does not prompt for user selection if geolocated server list fetch successful - Fix: Folder icons for add torrent in Windows 7 - Fix: rate limiting problem when using calc_overhead and switching between unlimited and rate limited upload or download - Change: added second upload and download graphs that include the estimated TCP/IP overhead - Fix: GUI issue where some strings would be truncated for some translations - Fix: Flags in peers tab - Fix: Broken toolbar images if Windows theme is changed -- 2010-01-12: Version 2.0 RC3 (build 17774) - Fix: Compelete pending Disk operations before automatically shutting down - Fix: Don't exceed the upload limit with overhead when calc_overhead is on - Fix: Point uT at correct help url. - Change: Improve downloading/uploading performance with mixed-mode TCP and uTP - Change: Improve torrent gray out by also graying out progress bar when stopped by scheduler - Change: Disable net.calc_overhead by default - Fix: Don't gray out force started torrents when scheduler has stopped other torrents - Fix: Compatibility with old skins - Change: Use different icon for disabled RSS feed - Fix: Sharpen icon edges -- 2009-12-21: Version 2.0 RC2 (build 17668) - Fix: disconnect issue with seeds - Fix: uTP over Teredo at high speeds, and MTU problems on some kinds of networks - Fix: Add translations to new graph strings -- 2009-12-15: Version 2.0 RC1 (build 17624) - Change: New default artwork - Fix: webui would allow any name for guest account when enabled. - Fix: download/uploader limiter issues in build 17539 -- 2009-12-09: Version 2.0 Beta (build 17539) - Change: Added auto restart feature for use in minimized mode. - Change: on Windows 7 default to not minimize to tray - Change: silently add multiple torrents when more than 5 torrents are added using drag'n'drop   - Change: tell user about buggy 3rd party software that might degrade uTorrent performance - Fix: Transfer Cap tab in preferences would display incorrect Uploaded / Downloaded -- 2009-11-25: Version 2.0 Beta (build 17427) - Fix: fixed rare crash when using magnet links - Fix: fixed crash when super seeding a torrent without metadata - Fix: fixed handling of a uTP edge-case - Change: complete upload-only extension support -- 2009-11-18: Version 2.0 Beta (build 17341) - Fix: various GUI crash bugs - Fix: accept magnet links through add-url webUI -- 2009-11-12: Version 2.0 Beta (build 17273) - Fix: More strict https connection state management for halfopen accounting. - Fix: Problem during install toolbar offer - Change: relaxed the requirements on bencoded integers to parse some broken torrents -- 2009-11-06: Version 2.0 Beta (build 17188) - Change: added checks for heap corruption that caused crash in uTP - Change: improved stability by making all executable pages not writable - Fix: fixed stack overflow when copying peer list - Fix: fixed allocation regression in connection to peers -- 2009-11-03: Version 2.0 Beta (build 17127) - Change: enable multiple instances of the client to run on multi-user machines (e.g. fast user switching)  - Fix: fixed uTP crash in edge condition - Fix: fixed crash when icmp.dll wouldn't contain the expected functions - Fix: fixed crash when closing add torrent dialog while dragging a column - Change: The Speed guide will now reject ports listed in bt.no_connect_to_services_list - Change: add an upgrade message if a buggy version of nvLsp is detected - Fix: don't take the total number of connections into account when connecting to trackers - Change: increase default transfer cap to 250 GB/month - Fix: Accounting of halfopen https connections would cause uT to stop making new connections - Change: Made the DHT compatible with future extensions - Fix: sometimes the &ip= parameter sent to trackers would be incorrect - Fix: correctly order bencoded dict items in extension handshake message - Fix: fixed holepunch error handling and support detection - Fix: check invalid ports and IPs in the DNS resolver to avoid using them -- 2009-10-12: Version 2.0 Beta (build 16850) - Change: Revert change where asserts are active in release builds -- 2009-10-10: Version 2.0 Beta (build 16835) - Fix: various polishing on the setup guide - Fix: potential crash related to TLS not being initialized - Change: Disable installer for Wine - Change: Balance CDNs to download updates - Fix: Fixes bug where magnet links wouldn't work if PEX was disabled - Fix: potential crash in network code - Fix: More crashes when using magnet links -- 2009-09-25: Version 2.0 Beta (build 16666) - Fix: Port settings saved in Setup guide - Change: updated helpfile code to be forward compatible with changes - Fix: fixed torrent creation bug - Fix: fixed crash introduced in last build - Fix: fixed rare crash when parsing messages -- 2009-09-24: Version 2.0 Beta (build 16625) - Change: UI improvements in setup guide - Fix: more setup guide crash fixes - Fix: fixed rare holepunch crash - Change: collect stats on holepunch performance -- 2009-09-17: Version 2.0 Beta (build 16546) - Fix: fixed crashes in setup guide - Fix: graying out custom toolbars with transparency - Change: Disable Ask for unsupported 64-bit Windows -- 2009-09-14: Version 2.0 Beta (build 16515) - Fix: fixed crash in setup guide - Fix: fixed UDP-tracker crash when dns resolution would fail - Change: Use user-supplied port in Setup Guide, save auto-portmap prefs. - Change: Added European Servers in Setup Guide - Change: New Icons in Setup Guide - Fix: Improper mutex accounting in hang detector - Fix: crash when creating torrents -- 2009-09-09: Version 2.0 Beta (build 16407) - Fix: fixed handling of invalid udp tracker responses -- 2009-09-04: Version 2.0 Beta (build 16394) - Fix: bugs where have messages would not be remebered for magnet link downloads - Fix: Buffer overrun vulnerability - Change: Conservative network locking in installer - Fix: rare crash in low level network read and write - Fix: fixed crash in udp tracker connection with unresponsive DNS - Fix: improved out-of-memory error handling in disk thread - Fix: Installer crash after download - Feature: Stop setup guide tests without exiting dialog - Fix: Crash when peers disconnect from a magnet-link torrent right as we received the metadata - Fix: Fixes bug where magnet links wouldn't work if PEX was disabled - Feature: added ability to re-run setup tests - Fix: Fix crash when using magnet links and a peer is failing at a particular point - Fix: Fixed negative allocation in RequestChunks() for web seeds - Change: Updated bandwidth presets in Setup guide - Fix: Fix startup race condition between network and disk I/O thread - Change: Optimization added to speed up torrent creation -- 2009-08-20: Version 2.0 Beta (build 16222) - Feature: Added versioned help files. - Fix: Setup guide fixes - Fix: installer with UAC - Fix: Allow UDP trackers in the first tier when creating torrents - Fix: UDP Tracker retries three times instead of two - Fix: potential crash in installer - Fix: Crashes when removing labels - Fix: selection of labels over 256 characters in length - Fix: multiple HTTP download crashes - Fix: http seed fix for multifile torrents - Fix: uTP connections that are upload rate limited will not have their max window size grow indefinitely - Fix: Vista and Windows 7 FW rules are created for all profiles -- 2009-08-10: Version 2.0 Beta (build 16126) - Fix: tracker requests are not invalid anymore -- 2009-08-04: Version 2.0 Beta (build 16081) - Change: disable toolbar offers for Wine installs - Feature: New Setup guide & Speedtest. - Change: uninstaller is added to all user profiles - Fix: crash when assigning new label to torrents from RSS - Change: Incomplete downloads sort after completed downloads if sorting by "Completed On" - Feature: Add Moldova to peer flags - Change: Added upnp host cache to speed up upnp nat resolution on misbehaving routers - Fix: maintain category list selection on update for some edge cases - Change: if selected, install start menu and desktop shortcuts to all users instead of only current user - Feature: Grayscale disabled toolbar buttons - Fix: fixed uTP selective ack bug (would cause connections to stall and time out) - Fix: fixed uTP fast re-send bug (would sometimes re-send packets that shouldn't be re-sent) - Change: prompt to take associations in installer only if any others exist - Fix: buffer overrun vulnerability in create torrent dialog - Fix: uTP recovers faster after timeout - Feature: uTP supports window sizes smaller than the packet size - Change: reduced uTP overhead slightly by ramping up packet sizes at lower rates - Feature: enable and disable toolbar buttons according to selected torrents - Change: UAC must be completed to install in Vista or higher - Fix: memory leaks in main window, protocol associations, settings dialog, general tab - Change: Tweaks to Ask toolbar offer - Feature: UDP tracker support - Fix: only change run on startup if installer is shown - Change: added support for 3:rd party applications to more easily be configured to access the uTorrent web UI, i.e. to pair the applications - Fix: make "alternate upload rate when seeding" apply when the seeding is set by the scheduler - Fix: align "Web Seeds" in torrent creation dialog - Fix: translated strings in uninstaller - Fix: http seeds would not reconnect after stopping and starting torrent - Fix: http seed for multifile torrents - Fix: regression in 15562 that caused frequent crashes - Feature: New installer with EULA, file association - Fix: uTP issue on low-latency high-throughput networks - Fix: copying long filenames to clipboard no longer results in garbage or crash - Fix: fixed web seed support for multi-file torrents - Change: torrent whose "Force Recheck" is greyed out will not recheck when asked through multi-torrent selections - Fix: when adding torrents through URLs via commandline, we would always open the add torrent dialog - Fix: handle multi file torrents with web seed urls that incorrectly don't end with a slash - Fix: make sure web seed urls end with a slash for multifile torrents - Fix: setup Vista firewall - Fix: remove settings on Vista during un-installation - Feature: New "Transfer Cap" pane in Preferences - Feature: uTP can be enabled or disabled using "Enable bandwidth management" checkbox in Preferences - Fix: Check at startup for incompatible versions of NVIDIA nForce firewall

Очень у многих пользователей при переходе с предыдущей версии закачка пошла волнообразно. Это связано с включением UDP протокола. Реально у пользователя не работает или слабый компьютер и процессор не справляется с возникающей нагрузкой.

Можно отключить UDP трафик параметром bt.transp disposition=5. Это битовый параметр, где каждый бит отвечает за определенный флаг.

• bt.transp_disposition контролирует какой транспорт должен использоваться для исходящих соединений (это значит, что он не фильтрует входящих соединений). Допустимые значения параметра:

• • 1 : разрешить инициировать исходящие TCP-соединения.
  • 2 : разрешить инициировать исходящие uTP-соединения.
  • 4 : разрешить принимать входящие TCP-соединения.
  • 8 : разрешить принимать входящие uTP-соединения

Флаги можно комбинировать. Таким образом, 13 (1+4+8), значение по умолчанию в последних версиях 1.8.Х, означает возможность принимать все виды соединений, но самостоятельно устанавливать только TCP. 15 (значение по умолчанию в 1.9\2.0) разрешает все виды как исходящих так и входящих соединений. Чтобы запретить uTP вообще (если он вызывает какие-либо проблемы) надо поставить 5 (1+4).

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