Comment 47 for bug 85751

I'd just like to help out finding the bug: i think this is cpu-dependant.

Up to one week ago, I was using ubuntu feisty (server install) on an old IBM netfinity 5100 ( Pentium III 900 MHz ) with 512MB SD-RAM. I had NO PROBLEM at all with mencoder and mp3 audio.

Some days ago I just installed a new Athlon 64 PC to replace it. I went for 32 bit Ubuntu Feisty, installed from scratch, updated, and got those nasty sounds when encoding (using the very same scripts and codecs) which i didn't happen to experience on the P3.

This could be a runtime optimization issue rather than a "real" bug, hence hard to spot. A good trial might be to recompile the package with less optimization, leading to a slower but working package.