change in catalina

[BJ Freeman]

Just checking before heading to the Apache Tomcat ml.
had code the worked.
when I post was sent to URL it got down to the controller and got
processed correctly.
Now I get a 400 error for the same post.
I am now on a Linux machine, if that makes a difference.
just wondering if there have been any changes to catalina code outside
of the orginal code.
Thanks.