Okay, then. As long as you're sure about that, then it's time to look for a different encoder, or (as you said), update the current encoder to its most recent version and check your quality settings.

Have you tried LAME? I have had good results using high-quality variable bit rate encoding with both the LAME and Xing encoders.

The problems you describe shouldn't happen even with Joint Stereo encoding, provided the encoder is behaving itself.

The reaon I say you should use Joint Stereo if possible, is because it makes a more efficient use of the bits and allows higher quality within a given bit rate.

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Tony Fabris