I get dozens of "irq: field oops [odd]" messages when recording (during a minute or so). My card is Terratec Cinergy 600 and I use driver version 0.2.8. What do such messages mean? Of course, the messages do not hurt in itself but audio quality is quite bad too; namely the sound has frequent cracks. Could this be connected with the above? Sound recorded under Windows does not have such imperfections. As I stated in an earlier post, I had managed to record only silence in mono or 8-bits. Recently I noticed, through trying to write the recording into a file, that sox actually blocks indefinitely, so read() does not return at all when using these formats.