Error "panic: pthread_key_create failed" during Apache restarts with WLProxy 1.1

Hi,            We upgraded WLProxy plugin from 1.0 to 1.1. Since after the upgrade, we see sometimes (somewhat frequent) during restarts of apache, following error on apache error log, and apache fails to restart gracefully.
            Any idea what is causing this, any known bug or fix?

panic: pthread_key_create failed

Thanks for your help in advance.

Thanks & Regards,
Aswin Kothakota


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Apache config::
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ls -la /usr/lib64/
...
-rwxr-x---  1 root root 48166196 Oct 15 14:53 libclntsh.so.11.1
-rwxr-x---  1 root root  8077904 Oct 15 14:53 libnnz11.so
-rwxr-x---  1 root root    20235 Oct 15 14:53 libwlssl.so
----------------------------------------------------------------
/etc/httpd/modules/
...
-rwxr-x--- 1 root root 338498 Oct 15 14:53 mod_wl.so
----------------------------------------------------------------
[webadmin@uwebda06 vhosts]$ echo $LD_LIBRARY_PATH