<br><font size=2 face="sans-serif">First of all, here's a partial answer
to my own question:</font>
<br>
<br><font size=2 face="sans-serif">The problem appears to be that the RPM
version of mod_perl is defective.</font>
<br><font size=2 face="sans-serif">I ran an experiment, running another
instance of apache with the same</font>
<br><font size=2 face="sans-serif">configuration, except that it uses a
mod_perl.so that I built from source,</font>
<br><font size=2 face="sans-serif">instead of the one from the RPM. RT
works fine in this instance of apache.</font>
<br><font size=2 face="sans-serif">I still don't know what's wrong with
the one from the RPM, but I'm convinced</font>
<br><font size=2 face="sans-serif">that's where the problem is.</font>
<br>
<br><font size=2 face="sans-serif">So I'm going to use this as an example
to argue against the "RPM only" style</font>
<br><font size=2 face="sans-serif">of system administration.</font>
<br>
<br><font size=2 face="sans-serif">Now, Vivek Khera asks:</font>
<br><font size=2 face="sans-serif">> </font><font size=3>Just curious
what the big attraction to switching from fcgi to mod_perl is? RT
makes no use of the deep apache integration mod_perl offers, and fastcgi
is just as clean and fast of a solution, if not better when you have other
things your web server is doing too.</font>
<br>
<br><font size=2 face="sans-serif">Actually, I like FastCGI. The architecture
seems more robust. It might be slightly slower</font>
<br><font size=2 face="sans-serif">than mod_perl, but it's certainly fast
enough in my experience.</font>
<br>
<br><font size=2 face="sans-serif">But there's a separate issue of popularity.
My boss feels that simply because mod_perl is more</font>
<br><font size=2 face="sans-serif">widely used, it's likely to get better
support, and so FastCGI is more likely to have problems sometime</font>
<br><font size=2 face="sans-serif">in the future.</font>
<br><font size=2 face="sans-serif">That seems reasonable to me, although
my experience with getting mod_perl installed on the</font>
<br><font size=2 face="sans-serif">production machine points the other
way ;-(</font>
<br>
<br><font size=2 face="sans-serif">-- </font>
<br><font size=2 face="sans-serif">Harry</font>
<br>