Hi With more details provided on this ticket: http://code.mythtv.org/trac/ticket/10749 Here is a 32 bits build built against Qt 4.6.4 http://www.avenard.org/files/mythtv/mac/MythFrontend-i386-v0.25-146-gb1b516e.dmg This build has no playback issue on a mac mini 2010 with the HDPVR sample provided. JY