Application crashed while using log4cxx library

Hi,

I am using log4cxx (0.10.0 version) on RHEL 2.6 version. I built it with apr-1.2.8, apr-util-1.2.8.
When I used that in my application it crashed with backtrace pointing to memcpy in stdc++ libraray.

************************
(gdb) set args start
(gdb) r
Starting program: /vobs/S3/code/sbin/SysControlCLI start
[Thread debugging using libthread_db enabled]
[New Thread -1209981248 (LWP 9310)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1209981248 (LWP 9310)]
0x00b8d09c in memcpy () from /lib/tls/libc.so.6
(gdb) bt
#0  0x00b8d09c in memcpy () from /lib/tls/libc.so.6
#1  0x00ab5079 in std::string::_M_mutate () from /usr/lib/libstdc++.so.5
#2  0xb7f69863 in std::transform<__gnu_cxx::__normal_iterator<char const*, std::string>, std::insert_iterator<std::string>, int (*)(int)> (__first={_M_current = 0x80573ec "XMLLayout"}, __result=

        {<std::iterator<std::output_iterator_tag,void,void,void,void>> = {<No data fields>}, container = 0xbffff4cc, iter = {_M_current = 0x304c2c "xm"}}, __unary_op=0xb444a0 <tolower>) at basic_string.h:1360

#3  0xb7f69426 in log4cxx::helpers::StringHelper::toLowerCase (s=@0x8057299) at basic_string.h:474
#4  0xb7ede6e4 in log4cxx::helpers::Class::registerClass (newClass=@0xb7fc9ef0) at new_allocator.h:62
#5  0xb7ee101a in log4cxx::helpers::ClassRegistration::ClassRegistration () at namepatternconverter.cpp:33
#6  0xb7f7c0eb in log4cxx::xml::XMLLayout::registerClass () at xmllayout.cpp:35
#7  0xb7f7d222 in global constructors keyed to _ZNK7log4cxx3xml9XMLLayout8getClassEv () at xmllayout.cpp:35
#8  0xb7f7ee05 in __do_global_ctors_aux () from /vobs/S3/tools/log4cxx-0.10.0/src/.libs/liblog4cxx.so.10
#9  0xb7eccf05 in _init () from /vobs/S3/tools/log4cxx-0.10.0/src/.libs/liblog4cxx.so.10
#10 0x00b12208 in _dl_init_internal () from /lib/ld-linux.so.2
#11 0x00b067f5 in _dl_start_user () from /lib/ld-linux.so.2
(gdb) q
The program is running.  Exit anyway? (y or n) y
******************************

And I have following libraries

mgb376@micslin09:/usr/lib [\>]  ls -l /usr/lib/libstdc++*
-rwxr-xr-x  1 root root 258288 Dec 14  2004 /usr/lib/libstdc++-2-libc6.1-1-2.9.0.so*
-rwxr-xr-x  1 root root 268428 Dec 14  2004 /usr/lib/libstdc++-3-libc6.2-2-2.10.0.so*
lrwxrwxrwx  1 root root     30 Feb 20 16:20 /usr/lib/libstdc++-libc6.1-1.so.2 -> libstdc++-2-libc6.1-1-2.9.0.so*
lrwxrwxrwx  1 root root     31 Feb 20 16:20 /usr/lib/libstdc++-libc6.2-2.so.3 -> libstdc++-3-libc6.2-2-2.10.0.so*
lrwxrwxrwx  1 root root     18 Feb 20 15:29 /usr/lib/libstdc++.so.5 -> libstdc++.so.5.0.7*
-rwxr-xr-x  1 root root 744136 Dec  1  2004 /usr/lib/libstdc++.so.5.0.7*
lrwxrwxrwx  1 root root     18 Feb 20 15:17 /usr/lib/libstdc++.so.6 -> libstdc++.so.6.0.3*
-rwxr-xr-x  1 root root 806176 Dec 14  2004 /usr/lib/libstdc++.so.6.0.3*

********************************

Trivial (trivial.cpp) seems to execute to properly.
Can anyone help me out?

Thnx,
Sandeep