Deallocation of a pointer not malloced

Hi,
I was using UnicodeString in Mac OS X(10.2.6) using CodeWarrior(8.3). When
ever UnicodeString is destroyed, I am getting the following message.

*** malloc[1015]: Deallocation of a pointer not malloced: 0xbffffd30; This
could be a double free(), or free() called with the middle of an allocated
block; Try setting environment variable MallocHelp to see tools to help
debug

This message is appearing even on simple console application.
I guess, UnicodeString, for memory allocation and release, uses C APIs
uprv_malloc()(uses malloc() ) and  uprv_free()(uses free()). The code
appears to be pretty good.
This problem is not occurring in case of Windows. Did I miss any settings?
thanks,
Venkat


 <<Venkatram Vundavalli.vcf>>