If you have any of the Marantz PMD digital audio recorders, whether you bought it last week or years ago, check the Firmware. I bought mine just a few months ago and was shocked this afternoon to find that the Firmware pre-dates the Internet. Well, almost! Mine, a PMD620, came with Firmware A1.14. A2.33 came out May 4th, 2009. A2.03 was current in March 2008. And there are not small problems being corrected by these newer versions of firmware. A2.03 corrected a latency problem where you heard a delayed version of the recording through the headphones. A2.27 came out at the beginning of 2009, and was the first to fix problems with 16 and 32GB SDHC memory cards. And the biggie that I bought it for: record more than 4GB worth of audio, which is just over 6 hours of 44KHz stereo WAV format. I'm also having trouble with (using A1.14) a recording where the WAV file is the right size, plays properly on the Marantz, but comes up a 0:00 in length on a computer. i.e. - the WAV file header has a zero time value. This probably comes up in one of the many firmware descriptions that talks about corrupt files and the like.