Problem using remote debugging w/ Resin3

I have a problem using remote debugging with Resin3. The problem is the same using both Idea 4.5.4 and 5.0.1. Under Resin2, using the same project, build, etc, everything works without problems.

I start resin with the arguments: -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5502

I connect to the debug port; using netstat, I can confirm that the connection has been established. However, whenever I try to set a breakpoint, the icon shows up with an X, indicating that it cannot find executable code at that particular line.

I'm running Idea on linux; have tried running it with JDK 1.4 and 1.5. The resin port is also on linux. The project is built with ant. (Again, everything works fine with Resin2.)

Any suggestions?