Audio Lockup / Stall

I've searched through these forums(open-source maillist) extensively for this widespread audio lockup/stall problem when doing full-duplex mode on the OSS Davinci sound driver, and was wondering if it has been resolved? Has there been a proposed solution that definitely works? Or could someone highlight the key problem here? I've dug deep through the davinci-audio and intfc dma files, and the conditions that trigger it seem skewed by the fact that I have debug prints enabled on the code files; sometimes, its due to the sound_irq handler not triggering (possible RFULL error condition), and at other times, it hangs due to 2 channels being used when the 3rd and 4th buffers are put on the DMA chain (should just return an error code and go on with its normal routine..but it doesn't)