We use the above configuration in our development environment and we've come across a buffer overflow problem between Apache2's mod_jk and the AJP connector in Tomcat6.
SEVERE: Buffer overflow: buffer.len=8192 pos=4204 data=6386
This happens because ColdFire outputs its debug output in the HTTP header. This leads to a problem if the amount of data exceeds 8192 bytes. In order to change the packet size you need it on the Tomcat6 side and the Mod_jk side.
On the Tomcat6 side, in server.xml add this to the AJP Connector:
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" packetSize="65536" />
Now in the JkWorkersFile specified in the Mod_jk configuration add:
Where default is the name of the specified worker.
Now restart both Tomcat6 en Apache2 and continue to enjoy ColdFire debugging.