Bug on OS X version of Java 5.0 - opening file dialogs

Hi
I keep getting a fatal error message that terminates my application when running under Java 5.0 in OS X. The same code used to run in 1.4.2 without problems. I haven't tried running in windows yet. The error seems to occur only when i try to open JFileChoosers - though on a test class file i successfully opened one without problems.
Here's the message:
2005-08-14 09:37:19.613 java[333] CFLog (0): CFMessagePort: bootstrap_register(): failed 1103 (0x44f), port = 0x10203, name = 'java.ServiceProvider'
See /usr/include/servers/bootstrap_defs.h for the error codes.
2005-08-14 09:37:19.636 java[333] CFLog (99): CFMessagePortCreateLocal(): failed to name Mach port (java.ServiceProvider)
Up to now the application is still running ok, and can still do stuff... But if i attempt to choose a file (internally using a JFileChooser) the following is displayed:
java(333,0x18d6c00) malloc: *** error for object 0x3b6b90: incorrect checksum for freed object - object was probably modified after being freed, break at szone_error to debug
java(333,0x18d6c00) malloc: *** set a breakpoint in szone_error to debug
Bus error
application terminates
Has anyone else seen this? Is there a fix?
Cheers
JJ.

Thanks for that, BlueInGreen.
My code uses the non-parameter version of JFileChooser already so the cause is something else i think.
The only thing i do to JFileChooser is the follwing:
JFileChooser openChooser = new JFileChooser();
openChooser.setCurrentDirectory(new File("."));
openChooser.setMultiSelectionEnabled(true);
openChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);This is so frustrating because the code looks absolutely fine and works perfectly in 1.4.2!
Thanks,
JJ.

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