Indesign Server errors

Hi,

I'm working with Indesign Server CS4 (6.0.3) Multiple Instance to create Indd document with a Javascript script and XML rules. My problem is that the server often crash with errors like:

InDesignServer(13064,0xa0815720) malloc: *** error for object 0x168fb771: Non-aligned pointer being freed

*** set a breakpoint in malloc_error_break to debug

InDesignServer(13064,0xa0815720) malloc: *** error for object 0x168fb770: Non-aligned pointer being freed (2)

*** set a breakpoint in malloc_error_break to debug

InDesignServer(13064,0xa0815720) malloc: *** error for object 0x168fb770: Non-aligned pointer being freed (2)

*** set a breakpoint in malloc_error_break to debug

or

Server clxwebuser$ InDesignServer(14947,0xa0815720) malloc: *** error for object 0x1d078011: Non-aligned pointer being freed

*** set a breakpoint in malloc_error_break to debug

./indesignserver: line 13: 14947 Segmentation fault      "$installed_name" "$@"

or

./indesignserver: line 13:  1631 Bus error               "$installed_name" "$@"

I'm working with 2 instance which are quite frequently called to create page.

What can I do?

Thanks in advance.

Massimo