I'm running Grandorgue with Ubuntu Linux 12.04 on a fairly new laptop. I have it hooked up to the MIDI outputs from a Hammond 825 console. All is well until I try to record to a wav file. When recording to wav, I get periodic crackling in the sound which affects the recording. Currently I have an external USB SB1090 plugged in, but I had the same problem when using the onboard audio, so the sound card does not seem to make a difference. Again, it works fine when not recording, but as soon as record is enabled there is trouble. Anybody else run into this problem?