[Zope] error in pcgi

[Service Informatique CHSR]

Hello,

my site was working great when suddenly, I got a "Temporarily unavailable"
message.
The pcgi.log reads:

unexpected out-of-bound data in stdin t[0]=60

several times. I suppose this means that something is writing to the
stream read by pcgi. I didn't do anything other than uploading new versions
of my DTML Documents to the site. (I have done this all the aternoon long).

Have you already seen this behavior? Does someone have an idea of
where to start to find the problem?

Regards,

Jephte CLAIN,
Service Informatique CHSR