JDeveloper 10.1.2 really slow when debugging

Hi,
I've been using Oracle JDeveloper 10.1.2 since it appeared and I think it's a quite good IDE. But since some weeks, debugging J2EE applications became a very slow task. It takes about 10 to 15 seconds for every step the debugger takes.
I'm using Java 1.5.0_06-b05, and remotely debugging an application deployed on Tomcat 5.5.17 (on the same machine than JDeveloper).
It worked alright until I did something (I don't know what) and it started being so slow...
I tried to reinstall JDeveloper, the Java SDK, Tomcat... but it did'nt help.
I'm running it all over a Fedora Core 5 Linux.
Does anybody have any ideas to speed debugging up?
Thanks a lot.
Òscar

This is a problem I have as well - except it's slow (10 to 15 seconds per step) even for a small application running in the embedded OC4J.
I have 2 machines, and old dual processor AMD Athlon and a new dual processor dual core AMD 64 bit Opterons. Both are running FC5. Jdeveloper is fast on the new box with everything except debugging. Debugging is fast on the old box.
While waiting the 10 to 15 seconds for the single-step to occur, there is no CPU activity - all 99.9% idle. What is Jdeveloper doing? It seems to be waiting for something.
Is there anyone from Oracle with an answer???

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