I started using build 25329 yesterday. I am a fairly heavy bittorent user but have noticed no problems so far on my new 64bit Win7 computer(8GB Ram, Athlon II Quadcore) The streaming feature is nice. Only bug I have found so far is, If I click on the search icon the application hangs right away. 1 other bug, can't select individual files in the torrent. They immediately unselect themselves.