I am new to this list so apologies if this has been answered before. A quick search of the archives did not reveal anything. I have two problems, one pertaining to channel tuning and the other to audio. Channel tuning: - Using the <up arrow> key to change channels in mythTV results in both the frontend and backend hanging. Tuning to channels manually (e.g., typing 41 <enter>) takes me to the correct channel. To fix the problem I have to kill the frontend, restart the backend and restart the frontend. - Channels do not change when scheduling a recording. MythTV always records from the channel I left the card tuned in (but the title in the media library is the program I intended to record). Audio: - When changing channels the audio is sometimes lost. Tuning to a different channel usually fixes the problem, and I can even tune back the original channel with working audio. - This sometimes also happens during recording, which is very bad. My setup is as follows: Kernel 2.6.13-1.1532_FC4 (no patches applied) Latest nvidia driver (7676) Intel 2.66GHz processor, 1GB RAM Chaintech GeForce FX5200 display card Air2PC (Technisat) ATSC-PCI (r0.2) tuner card, firmware dvb-fe-bcm3510-01.fw MythTV installed from ATrpms Before trying the HD card I tried my setup with a bttv card and it worked just fine. Can anyone help? Christos.