ER passed on some error messages from Tomcat-stable:

2011-01-25T13:40:03-08:00 
pear.hcmc.uvic.ca/pear.hcmc.uvic.ca/pear.hcmc.uvic.ca daemon.err tomcat: 
hcmc-stable
[ajp-8009-4]: Use of deprecated, since 2008-04-02, function 
fn:item-at(). It will be removed really soon. Please use
$x[1] instead.

It's not clear which project they're from, but item-at is used in xrequest.xq in Graves (line 365). I'll have to test replacing it.