I came across this on the rec.arts.movies.production.sound newsgroup and, since there are a few users here, thought it should be mentioned.

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I just came off a long multi HV1U (10
Cameras) shoot and there are MANY, MANY Audio Issues. Besides what
has been noted in previous posts both here and on other forums, the
V1U has a big audio glitch. If you hot swap any of the xlr's (as in
unplug and replug while the camera is on) you run a better than a
50/50 chance that the channel or chanels with go either go dead or you
will hear noise and the vu meters will pin or the gain structure will
go haywire. Only way to get the camera audio back is to reboot (turn
off wait 10 seconds) and turn it back on.

This was not isolated 1 one camera or one production run. 10 cameras
with very dirrerent serial numbers. This issue was brought to the
attention ot the Sony USA reps as this was a pretty high profile shoot
for this camera and so far its has not been addressed.

Another thing to be aware of with this camera is in high RF
enviroments, RF can and does screw with the focus of the camera.
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Mike